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Kaiser R, Khadanovich A, Benes M, Reynolds J, Mawhinney G, Giele H, Kachlik D. Clinical Anatomy of the Sacral Nerve Roots and Its Relevance to Their Reconstruction After Sacrectomy. Neurosurgery 2024:00006123-990000000-01311. [PMID: 39132994 DOI: 10.1227/neu.0000000000003135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 06/15/2024] [Indexed: 08/13/2024] Open
Abstract
BACKGROUND AND OBJECTIVES En bloc sacrectomy is associated with sacral root transection causing loss of urinary bladder, rectum, and sexual function. The aim of the study was to determine the position of the pudendal branches (sensorimotor) and pelvic splanchnic nerves (parasympathetic) on the sacral roots relative to the sacrum, and the minimal and maximal defects in the sacral roots that can be reconstructed by grafting after various types of sacrectomy. METHODS Five cadaveric pelves were dissected bilaterally. The lengths and widths of the S1-S4 roots and their branches were measured. Then, the minimal and maximal defects between the proximal and distal stumps of the sacrificed roots were measured following 3 models of sacrectomy (below S2, below S1, and total sacrectomy). RESULTS The mean distance of the splanchnic nerves from the S2 and S3 anterior sacral foramina was 17.7 ± 7.3 and 23.6 ± 11.1 mm, respectively, and the mean distance of the pudendal S2 and S3 branches was 36.8 ± 13.7 and 30.2 ± 10.8 mm, respectively. The mean widths of the S2 and S3 roots were 9.3 ± 1.9 and 5.4 ± 1.2 mm, respectively. The mean maximal defects in S2 and S3 roots after various types of sacrectomies were between 61.8 ± 16.3 and 100.7 ± 14.3 mm and between 62.7 ± 20.2 and 84.7 ± 25.1 mm, respectively. There were no statistically significant differences between sides or sexes for all obtained measurements. CONCLUSION The reconstruction of the S2-S3 roots is anatomically feasible after partial or total sacrectomies in which the resection of the soft tissue does not extend further than approximately 1.5 to 2 cm ventrally from the sacrum.
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Affiliation(s)
- Radek Kaiser
- Department of Spinal Surgery, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
- Center for Endoscopic, Surgical and Clinical Anatomy (CESKA), Second Faculty of Medicine, Charles University, Prague, Czech Republic
- Department of Anatomy, Second Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Anhelina Khadanovich
- Center for Endoscopic, Surgical and Clinical Anatomy (CESKA), Second Faculty of Medicine, Charles University, Prague, Czech Republic
- Department of Anatomy, Second Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Michal Benes
- Center for Endoscopic, Surgical and Clinical Anatomy (CESKA), Second Faculty of Medicine, Charles University, Prague, Czech Republic
- Department of Anatomy, Second Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jeremy Reynolds
- Department of Spinal Surgery, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Gerard Mawhinney
- Department of Spinal Surgery, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
- Nuffield Department of Clinical Neuroscience, University of Oxford, Oxford, UK
| | - Henk Giele
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
- Department of Plastic Surgery, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - David Kachlik
- Center for Endoscopic, Surgical and Clinical Anatomy (CESKA), Second Faculty of Medicine, Charles University, Prague, Czech Republic
- Department of Anatomy, Second Faculty of Medicine, Charles University, Prague, Czech Republic
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Du Z, Tang X, Cai Z, Wang H, Wei R, Wang J. Intentional Dural Resection during en bloc Spinal Resection Could Provide a Secure Surgical Margin for Patients with Recurrent Spinal Tumors. Orthop Surg 2024; 16:1753-1760. [PMID: 38859700 PMCID: PMC11293908 DOI: 10.1111/os.14104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/21/2024] [Accepted: 04/28/2024] [Indexed: 06/12/2024] Open
Abstract
OBJECTIVE It is always difficult to obtain a comfortable surgical margin for patients with recurrent malignant or invasive benign spinal tumors. Tumor intraspinal invasion and dural adhesion are the essential reasons. There are always residual tumor cells maintained at the edge of dura. Dural resection is a key point to obtain a comfortable surgical margin for such cases. Whether such patients benefit from this risky surgical procedure is unknown. This study aims to understand better the oncological results, associated risks, and neurological function of this risky surgical procedure. METHODS We retrospectively reviewed clinical data from six consecutive patients who registered spinal tumors in our institute and underwent dural resection during en bloc spinal resection from June 2013 to May 2020. The demographic and perioperative data, oncological outcomes, complications, and neurological status were collected and analyzed. RESULTS All six patients were followed up for 24 to 46 months (mean follow-up time: 32.8 months). Local recurrence was detected in one patient (1/6, 16.7%) at 36 months postoperatively and in five patients with no evidence of disease at the last follow up (survival rate 83.3%). Eleven complications occurred in four patients (66.7%), and the dural resection-related complications included only four cases of cerebrospinal fluid leakage (CSFL), which accounted for 36.4% (4/11) of all complications. Neurologic status evaluated by the Frankel grade showed improvement of one grade in one case and deterioration of one to two grades in five patients immediately after surgery. All deterioration cases recovered to the preoperative level 6 months after the operation. CONCLUSION Dural resection is significant for patients with dura matter invaded by recurrent primary malignant or invasive benign spinal tumors with the purpose of clinical cure. This study demonstrated that in strictly selected cases, intentional dural resection could provide satisfying local control and long-term disease-free survival with acceptable complications and satisfying neurological function.
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Affiliation(s)
- Zhiye Du
- Musculoskeletal Tumor CenterPeking University People's HospitalBeijingChina
| | - Xiaodong Tang
- Musculoskeletal Tumor CenterPeking University People's HospitalBeijingChina
| | - Zhenyu Cai
- Musculoskeletal Tumor CenterPeking University People's HospitalBeijingChina
| | - Han Wang
- Musculoskeletal Tumor CenterPeking University People's HospitalBeijingChina
| | - Ran Wei
- Musculoskeletal Tumor CenterPeking University People's HospitalBeijingChina
| | - Jun Wang
- Musculoskeletal Tumor CenterPeking University People's HospitalBeijingChina
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Morimoto LR, Kase DT, Esmanhotto PG, Maciel MA, Augusto ACL, Catricala PF, Anaya JEC, Mukherjee S, Fernandes ARC, Aihara AY. Imaging Assessment of Nontraumatic Pathologic Conditions at the Craniovertebral Junction: A Comprehensive Review. Radiographics 2024; 44:e230137. [PMID: 38635454 DOI: 10.1148/rg.230137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Nontraumatic pathologic conditions of the craniovertebral junction encompass a range of conditions affecting the complex anatomy of this region without direct physical injury. These conditions include congenital syndromes that predispose individuals to ligamentous laxity, potentially leading to instability. Additionally, rare but noteworthy cases such as Grisel syndrome, a cause of pediatric torticollis, may arise without a traumatic trigger. Inflammatory diseases, including rheumatoid arthritis, ankylosing spondylitis, and crystal deposition, can lead to cervical instability and spinal cord compression. Infections at the upper cervical spine are dominated by tuberculosis, typically transmitted through hematologic or lymphatic routes with characteristic imaging findings. On the other hand, purulent bacterial infections in this area are rare. Furthermore, although tumors involving the structures of the craniovertebral junction are infrequent, they can lead to significant complications, albeit less frequently through cord compression and more commonly via pathologic fractures or subluxation. The craniocervical junction is a complex anatomic region comprising ligaments, bones, joints, and muscles that support the head's weight and enable its wide range of motion. Accurate recognition and understanding of the complex anatomy and the various nontraumatic pathologic conditions at the craniovertebral junction are pivotal for initiating timely and appropriate treatment strategies. ©RSNA, 2024 Test Your Knowledge questions for this article are available in the supplemental material.
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Affiliation(s)
- Letícia R Morimoto
- From the Department of Diagnostic Imaging, Universidade Federal de São Paulo (UNIFESP), Rua Napoleão de Barros 800, Vila Clementino, São Paulo, SP 04024-002, Brazil (L.R.M., D.T.K., P.G.E., A.C.L.A., P.F.C., A.R.C.F., A.Y.A.); Dasa Institute for Education and Research (IEPD), Rio de Janeiro, Brazil (D.T.K., P.G.E., M.A.M., A.C.L.A., P.F.C., J.E.C.A., A.Y.A.); Department of Radiology, A.C. Camargo Cancer Center, São Paulo, Brazil (M.A.M.); Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Va (S.M.); and Group of Radiology and Diagnostic Imaging, Rede D'Or São Paulo, São Paulo, Brazil (A.R.C.F.)
| | - Daisy T Kase
- From the Department of Diagnostic Imaging, Universidade Federal de São Paulo (UNIFESP), Rua Napoleão de Barros 800, Vila Clementino, São Paulo, SP 04024-002, Brazil (L.R.M., D.T.K., P.G.E., A.C.L.A., P.F.C., A.R.C.F., A.Y.A.); Dasa Institute for Education and Research (IEPD), Rio de Janeiro, Brazil (D.T.K., P.G.E., M.A.M., A.C.L.A., P.F.C., J.E.C.A., A.Y.A.); Department of Radiology, A.C. Camargo Cancer Center, São Paulo, Brazil (M.A.M.); Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Va (S.M.); and Group of Radiology and Diagnostic Imaging, Rede D'Or São Paulo, São Paulo, Brazil (A.R.C.F.)
| | - Paola G Esmanhotto
- From the Department of Diagnostic Imaging, Universidade Federal de São Paulo (UNIFESP), Rua Napoleão de Barros 800, Vila Clementino, São Paulo, SP 04024-002, Brazil (L.R.M., D.T.K., P.G.E., A.C.L.A., P.F.C., A.R.C.F., A.Y.A.); Dasa Institute for Education and Research (IEPD), Rio de Janeiro, Brazil (D.T.K., P.G.E., M.A.M., A.C.L.A., P.F.C., J.E.C.A., A.Y.A.); Department of Radiology, A.C. Camargo Cancer Center, São Paulo, Brazil (M.A.M.); Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Va (S.M.); and Group of Radiology and Diagnostic Imaging, Rede D'Or São Paulo, São Paulo, Brazil (A.R.C.F.)
| | - Murilo A Maciel
- From the Department of Diagnostic Imaging, Universidade Federal de São Paulo (UNIFESP), Rua Napoleão de Barros 800, Vila Clementino, São Paulo, SP 04024-002, Brazil (L.R.M., D.T.K., P.G.E., A.C.L.A., P.F.C., A.R.C.F., A.Y.A.); Dasa Institute for Education and Research (IEPD), Rio de Janeiro, Brazil (D.T.K., P.G.E., M.A.M., A.C.L.A., P.F.C., J.E.C.A., A.Y.A.); Department of Radiology, A.C. Camargo Cancer Center, São Paulo, Brazil (M.A.M.); Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Va (S.M.); and Group of Radiology and Diagnostic Imaging, Rede D'Or São Paulo, São Paulo, Brazil (A.R.C.F.)
| | - Ana C L Augusto
- From the Department of Diagnostic Imaging, Universidade Federal de São Paulo (UNIFESP), Rua Napoleão de Barros 800, Vila Clementino, São Paulo, SP 04024-002, Brazil (L.R.M., D.T.K., P.G.E., A.C.L.A., P.F.C., A.R.C.F., A.Y.A.); Dasa Institute for Education and Research (IEPD), Rio de Janeiro, Brazil (D.T.K., P.G.E., M.A.M., A.C.L.A., P.F.C., J.E.C.A., A.Y.A.); Department of Radiology, A.C. Camargo Cancer Center, São Paulo, Brazil (M.A.M.); Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Va (S.M.); and Group of Radiology and Diagnostic Imaging, Rede D'Or São Paulo, São Paulo, Brazil (A.R.C.F.)
| | - Patrick F Catricala
- From the Department of Diagnostic Imaging, Universidade Federal de São Paulo (UNIFESP), Rua Napoleão de Barros 800, Vila Clementino, São Paulo, SP 04024-002, Brazil (L.R.M., D.T.K., P.G.E., A.C.L.A., P.F.C., A.R.C.F., A.Y.A.); Dasa Institute for Education and Research (IEPD), Rio de Janeiro, Brazil (D.T.K., P.G.E., M.A.M., A.C.L.A., P.F.C., J.E.C.A., A.Y.A.); Department of Radiology, A.C. Camargo Cancer Center, São Paulo, Brazil (M.A.M.); Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Va (S.M.); and Group of Radiology and Diagnostic Imaging, Rede D'Or São Paulo, São Paulo, Brazil (A.R.C.F.)
| | - Julia E C Anaya
- From the Department of Diagnostic Imaging, Universidade Federal de São Paulo (UNIFESP), Rua Napoleão de Barros 800, Vila Clementino, São Paulo, SP 04024-002, Brazil (L.R.M., D.T.K., P.G.E., A.C.L.A., P.F.C., A.R.C.F., A.Y.A.); Dasa Institute for Education and Research (IEPD), Rio de Janeiro, Brazil (D.T.K., P.G.E., M.A.M., A.C.L.A., P.F.C., J.E.C.A., A.Y.A.); Department of Radiology, A.C. Camargo Cancer Center, São Paulo, Brazil (M.A.M.); Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Va (S.M.); and Group of Radiology and Diagnostic Imaging, Rede D'Or São Paulo, São Paulo, Brazil (A.R.C.F.)
| | - Sugoto Mukherjee
- From the Department of Diagnostic Imaging, Universidade Federal de São Paulo (UNIFESP), Rua Napoleão de Barros 800, Vila Clementino, São Paulo, SP 04024-002, Brazil (L.R.M., D.T.K., P.G.E., A.C.L.A., P.F.C., A.R.C.F., A.Y.A.); Dasa Institute for Education and Research (IEPD), Rio de Janeiro, Brazil (D.T.K., P.G.E., M.A.M., A.C.L.A., P.F.C., J.E.C.A., A.Y.A.); Department of Radiology, A.C. Camargo Cancer Center, São Paulo, Brazil (M.A.M.); Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Va (S.M.); and Group of Radiology and Diagnostic Imaging, Rede D'Or São Paulo, São Paulo, Brazil (A.R.C.F.)
| | - Artur R C Fernandes
- From the Department of Diagnostic Imaging, Universidade Federal de São Paulo (UNIFESP), Rua Napoleão de Barros 800, Vila Clementino, São Paulo, SP 04024-002, Brazil (L.R.M., D.T.K., P.G.E., A.C.L.A., P.F.C., A.R.C.F., A.Y.A.); Dasa Institute for Education and Research (IEPD), Rio de Janeiro, Brazil (D.T.K., P.G.E., M.A.M., A.C.L.A., P.F.C., J.E.C.A., A.Y.A.); Department of Radiology, A.C. Camargo Cancer Center, São Paulo, Brazil (M.A.M.); Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Va (S.M.); and Group of Radiology and Diagnostic Imaging, Rede D'Or São Paulo, São Paulo, Brazil (A.R.C.F.)
| | - André Y Aihara
- From the Department of Diagnostic Imaging, Universidade Federal de São Paulo (UNIFESP), Rua Napoleão de Barros 800, Vila Clementino, São Paulo, SP 04024-002, Brazil (L.R.M., D.T.K., P.G.E., A.C.L.A., P.F.C., A.R.C.F., A.Y.A.); Dasa Institute for Education and Research (IEPD), Rio de Janeiro, Brazil (D.T.K., P.G.E., M.A.M., A.C.L.A., P.F.C., J.E.C.A., A.Y.A.); Department of Radiology, A.C. Camargo Cancer Center, São Paulo, Brazil (M.A.M.); Department of Radiology and Medical Imaging, University of Virginia Health System, Charlottesville, Va (S.M.); and Group of Radiology and Diagnostic Imaging, Rede D'Or São Paulo, São Paulo, Brazil (A.R.C.F.)
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Sadek WMS, Elshamly IKF, Salem MSM, AbouSenna WG, Ebeid E, Ebeid WA. Functional and oncological outcomes of patients with proximal humerus osteosarcoma managed by limb salvage. J Orthop Traumatol 2024; 25:18. [PMID: 38637478 PMCID: PMC11026314 DOI: 10.1186/s10195-024-00756-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 02/24/2024] [Indexed: 04/20/2024] Open
Abstract
BACKGROUND Osteosarcoma is the most common primary bone malignancy in skeletally immature patients. The proximal humerus is the third most common site of osteosarcoma. The literature shows a paucity of published data concerning the outcome of proximal humerus osteosarcoma managed by limb salvage. The purpose of this study was to answer the following questions: (1) do patients with proximal humerus osteosarcoma managed by limb salvage and neoadjuvant chemotherapy show good functional and oncological outcomes, and (2) are there any prognostic factors that are associated with better oncological and functional outcomes? MATERIALS AND METHODS The study was a retrospective case series study assessing the overall outcome of 34 patients with proximal humerus osteosarcoma. Eighteen patients were males (53%) while 16 were females. Biological reconstruction was done in 15 patients (44%), while nonbiological reconstruction was done in 19 patients. Resections were mainly intraarticular (82%). Functional outcome was assessed using the Musculoskeletal Tumor Society (MSTS) score, while oncological outcome was assessed based on local recurrence and development of chest metastasis. Comparisons between quantitative variables were done using the nonparametric Mann-Whitney test. To compare categorical data, the chi-square (χ2) test was performed. The exact test was used instead when the expected frequency was less than 5. Correlations between quantitative variables were examined using the Spearman correlation coefficient. RESULTS The mean MSTS score was 25.5 (range 23-29). A younger age was statistically correlated with a poorer MSTS score (P = 0.0016). Six patients out of 34 (17.6%) had local recurrence and four of them (67%) were treated by forequarter amputation. 41% of patients developed chest metastasis, and the majority of them were treated by chemotherapy (71%). In comparison with patients with osteosarcoma at other sites who were also managed in our institution, proximal humerus osteosarcoma patients showed higher incidence rates of local recurrence and chest metastasis along with lower 5-year patient and limb survivorships compared to distal femur, proximal tibia and proximal femur osteosarcoma patients. CONCLUSION Treatment of osteosarcoma of the proximal humerus by limb salvage and chemotherapy yields a good functional outcome. The method of reconstruction does not impact the resultant function. The 5-year survivorship of these patients is 65%. Younger patients have a better oncological outcome and an inferior functional outcome. LEVEL OF EVIDENCE Level IV therapeutic study.
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Affiliation(s)
| | | | | | | | - Emad Ebeid
- Department of Paediatric Oncology and Haematology, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Walid Atef Ebeid
- Department of Orthopedics and Traumatology, Cairo University, Cairo, Egypt
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Chen JW, Chanbour H, Bowers M, Bendfeldt GA, Gangavarapu LS, Jonzzon S, Roth SG, Abtahi AM, Zuckerman SL, Stephens BF. Does Preoperative Bilsky Score Predict Outcome Following Surgical Resection of Primary Tumors of the Spine? World Neurosurg 2024; 184:e111-e120. [PMID: 38244684 DOI: 10.1016/j.wneu.2024.01.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 01/11/2024] [Indexed: 01/22/2024]
Abstract
OBJECTIVE In patients undergoing surgery for primary bone tumors of the spine, we sought to compare Bilsky score 0-1 versus 2-3 in: 1) preoperative presentation, 2) perioperative variables, and 3) long-term outcomes. METHODS A single-center, retrospective cohort study was undertaken of patients undergoing surgery for extradural, primary bone tumors of the spine between January 2010 and January 2021. The primary exposure variable was Bilsky score, dichotomized as 0-1 versus 2-3. Survival analysis was performed to assess local recurrence (LR) and overall survival (OS). RESULTS Of 38 patients undergoing resection of primary spinal tumors, 19 (50.0%) patients presented with Bilsky 0-1 and 19 (50.0%) Bilsky 2-3 grades. The most common diagnosis was chondrosarcoma (33.3%), followed by chordoma (16.7%). There were 15 (62.5%) malignant tumors. Preoperatively, there was no significant difference in demographics, Karnofsky Performance Scale (KPS) (P > 0.999), or motor deficit (P > 0.999). Perioperatively, no difference was found in operative time (P = 0.954), blood loss (P = 0.416), length of stay (P = 0.641), neurologic deficit (P > 0.999), or discharge disposition (P = 0.256). No difference was found in Enneking resection status (69.2% vs. 54.5%, P = 0.675). Long-term, no differences were found regarding reoperation (P = 0.327), neurologic deficit (P > 0.999), postoperative KPS (P = 0.605) and modified McCormick Scale (MMS) (P = 0.870). No difference was observed in KPS (P = 0.418) and MMS (P = 0.870) at last follow-up. However, patients with Bilsky 2-3 had shorter time to LR (1715.0 vs. 513.0 ± 633.4 days, log-rank; P = 0.002) and shorter OS (2025.0 ± 1165.3 vs. 794.0 ± 952.6 days, log-rank; P = 0.002). CONCLUSIONS Bilsky 2-3 lesions were associated with shorter time to LR and shorter OS. Patients harboring primary spinal tumors with higher grade Bilsky score appear to be at a higher risk for worse outcomes.
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Affiliation(s)
- Jeffrey W Chen
- School of Medicine, Vanderbilt University, Nashville, Tennessee, USA
| | - Hani Chanbour
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Mitchell Bowers
- Department of Orthopedic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | | | | | - Soren Jonzzon
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Steven G Roth
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Amir M Abtahi
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Department of Orthopedic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Scott L Zuckerman
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Department of Orthopedic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Byron F Stephens
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Department of Orthopedic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
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Yeung CM, Bilsky M, Boland PJ, Vaynrub M. The Role of En Bloc Resection in the Modern Era for Primary Spine Tumors. Spine (Phila Pa 1976) 2024; 49:46-57. [PMID: 37732462 PMCID: PMC10750970 DOI: 10.1097/brs.0000000000004821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 06/27/2023] [Indexed: 09/22/2023]
Abstract
STUDY DESIGN A literature review. OBJECTIVE The aim of this review is to provide an overview of benign and malignant primary spine tumors and a balanced analysis of the benefits and limitations of (and alternatives to) surgical treatment with en bloc resection. SUMMARY OF BACKGROUND DATA Primary spine tumors are rare but have the potential to cause severe morbidity, either from the disease itself or as a result of treatment. The prognosis, goals, and treatment options vary significantly with the specific disease entity. Appropriate initial management is critical; inappropriate surgery before definitive treatment can lead to recurrence and may render the patient incurable, as salvage options are often inferior. METHODS We performed a comprehensive search of the PubMed database for articles relevant to primary spine neoplasms and en bloc spine surgery. Institutional review board approval was not needed. RESULTS Although Enneking-appropriate en bloc surgery can be highly morbid, it often provides the greatest chance for local control and/or patient survival. However, there is growing data to support modern radiotherapy as a feasible and less morbid approach to certain primary neoplasms that historically were considered radioresistant. CONCLUSIONS Choosing the optimal approach to primary spine tumors is complex. A comprehensive and up-to-date assessment of the evidence is required to guide patient care and to balance the often-competing goals of prolonging life and preserving quality of life.
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Affiliation(s)
- Caleb M. Yeung
- Department of Surgery, Orthopaedic Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Mark Bilsky
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Patrick J. Boland
- Department of Surgery, Orthopaedic Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Max Vaynrub
- Department of Surgery, Orthopaedic Service, Memorial Sloan Kettering Cancer Center, New York, New York, USA
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Jasiewicz B, Helenius I. Tumors and infections of the growing spine. J Child Orthop 2023; 17:556-572. [PMID: 38050596 PMCID: PMC10693843 DOI: 10.1177/18632521231215857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 11/03/2023] [Indexed: 12/06/2023] Open
Abstract
The growing spine differs from the adult spine in several ways. Although tumors and infections cause only a small percentage of pediatric back pain incidences, delayed proper diagnosis and treatment may be disastrous. Benign lesions, such as osteoid osteoma, osteoblastoma, and aneurysmal bone cyst in the spine, are predominant during the first two decades of life, whereas malignant bony spinal tumors are rare. In the pediatric population, malignant spine tumors include osteosarcoma, Ewing's sarcoma, lymphoma, and metastatic neuroblastoma. Infections of the growing spine are rare, with the incidence of discitis peaking in patients under the age of 5 years and that of vertebral osteomyelitis peaking in older children. Spondylodiscitis is often a benign, self-limiting condition with low potential for bone destruction. Conservative treatments, including bedrest, immobilization, and antibiotics, are usually sufficient. Spinal tuberculosis is a frequently observed form of skeletal tuberculosis, especially in developing countries. Indications for surgical treatment include neurologic deficit, spinal instability, progressive kyphosis, late-onset paraplegia, and advanced disease unresponsive to nonoperative treatment. Spinal tumors and infections should be considered potential diagnoses in cases with spinal pain unrelated to the child's activity, accompanied by fever, malaise, and weight loss. In spinal tumors, early diagnosis, fast and adequate multidisciplinary management, appropriate en bloc resection, and reconstruction improve local control, survival, and quality of life. Pyogenic, hematogenous spondylodiscitis is the most common spinal infection; however, tuberculosis-induced spondylodiscitis should also be considered. Level of evidence: level 4.
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Affiliation(s)
- Barbara Jasiewicz
- Department of Orthopaedics and Rehabilitation, Jagiellonian University Medical College, Zakopane, Poland
| | - Ilkka Helenius
- Department of Orthopaedics and Traumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Paediatric Surgery, Orthopaedics and Traumatology, Turku University Hospital, University of Turku, Turku, Finland
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Amendola F, Ghiringhelli G, Mela A, Miranda S, Dolfato E, Bulgarelli E, Diomedi M, Bonomi S, Vaienti L, Luzzati A. Efficacy of Flap-based Posterior Trunk Reconstruction after Vertebrectomy and Radiation Therapy: A Retrospective Cohort Study. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2023; 11:e5242. [PMID: 37691698 PMCID: PMC10489417 DOI: 10.1097/gox.0000000000005242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 07/12/2023] [Indexed: 09/12/2023]
Abstract
Background Adjuvant radiation therapy following vertebrectomy is a major risk factor for local wound complications such as dehiscence, infection, and skin necrosis. In selected cases, well-vascularized coverage and modification of tension forces on the wound might reduce the risk of postoperative complications and reoperations. We aimed to demonstrate a reduction in general and specific complications in patients undergoing vertebral resection and flap coverage compared with vertebral resection alone. Methods We retrospectively analyzed and collected data from patients diagnosed with a tumor involving the spine and requiring a total or partial posterior vertebrectomy between January 2012 and October 2022, referred to a single tertiary-level orthopedic and trauma center. We included only patients in whom primary closure of the wound was possible but judged to be under excessive tension. Results A total of 145 patients underwent partial or total vertebrectomy for oncological reasons at our tertiary-level trauma hospital. Among these, 73 patients were eventually included according to the inclusion and exclusion criteria: 53 in the orthopedic group and 20 in the orthoplastic group. Considering only patients undergoing radiation therapy, the orthoplastic group showed significantly lower rates of overall complications (33% versus 69%) than the orthopedic group. Conclusions Primary flap coverage, especially in patients receiving RT, reduces the risk of postoperative complications and avoids a second reconstructive operation, consequently reducing patient discomfort, length of hospital stay, and healthcare costs.
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Affiliation(s)
| | | | | | | | - Elisa Dolfato
- From the Ospedale Galeazzi, Sant'Ambrogio, Milan, Italy
| | | | | | | | - Luca Vaienti
- From the Ospedale Galeazzi, Sant'Ambrogio, Milan, Italy
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9
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Morris JM, Wentworth A, Houdek MT, Karim SM, Clarke MJ, Daniels DJ, Rose PS. The Role of 3D Printing in Treatment Planning of Spine and Sacral Tumors. Neuroimaging Clin N Am 2023; 33:507-529. [PMID: 37356866 DOI: 10.1016/j.nic.2023.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
Three-dimensional (3D) printing technology has proven to have many advantages in spine and sacrum surgery. 3D printing allows the manufacturing of life-size patient-specific anatomic and pathologic models to improve preoperative understanding of patient anatomy and pathology. Additionally, virtual surgical planning using medical computer-aided design software has enabled surgeons to create patient-specific surgical plans and simulate procedures in a virtual environment. This has resulted in reduced operative times, decreased complications, and improved patient outcomes. Combined with new surgical techniques, 3D-printed custom medical devices and instruments using titanium and biocompatible resins and polyamides have allowed innovative reconstructions.
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Affiliation(s)
- Jonathan M Morris
- Division of Neuroradiology, Department of Radiology, Anatomic Modeling Unit, Biomedical and Scientific Visualization, Mayo Clinic, 200 1st Street, Southwest, Rochester, MN, 55905, USA.
| | - Adam Wentworth
- Department of Radiology, Anatomic Modeling Unit, Mayo Clinic, Rochester, MN, USA
| | - Matthew T Houdek
- Division of Orthopedic Oncology, Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | - S Mohammed Karim
- Division of Orthopedic Oncology, Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | | | | | - Peter S Rose
- Division of Orthopedic Oncology, Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
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10
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Maciejczak A, Gasik R, Kotrych D, Rutkowski P, Antoniak K, Derenda M, Dobiecki K, Górski R, Grzelak L, Guzik G, Harat M, Janusz W, Jarmużek P, Łątka D, Maciejczyk A, Mandat T, Potaczek T, Rocławski M, Trembecki Ł, Załuski R. Spinal tumours: recommendations of the Polish Society of Spine Surgery, the Polish Society of Oncology, the Polish Society of Neurosurgeons, the Polish Society of Oncologic Surgery, the Polish Society of Oncologic Radiotherapy, and the Polish Society of Orthopaedics and Traumatology. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2023; 32:1300-1325. [PMID: 36854861 DOI: 10.1007/s00586-023-07546-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/31/2022] [Accepted: 01/13/2023] [Indexed: 03/02/2023]
Abstract
PURPOSE The purpose of these recommendations is to spread the available evidence for evaluating and managing spinal tumours among clinicians who encounter such entities. METHODS The recommendations were developed by members of the Development Recommendations Group representing seven stakeholder scientific societies and organizations of specialists involved in various forms of care for patients with spinal tumours in Poland. The recommendations are based on data yielded from systematic reviews of the literature identified through electronic database searches. The strength of the recommendations was graded according to the North American Spine Society's grades of recommendation for summaries or reviews of studies. RESULTS The recommendation group developed 89 level A-C recommendations and a supplementary list of institutions able to manage primary malignant spinal tumours, namely, spinal sarcomas, at the expert level. This list, further called an appendix, helps clinicians who encounter spinal tumours refer patients with suspected spinal sarcoma or chordoma for pathological diagnosis, surgery and radiosurgery. The list constitutes a basis of the network of expertise for the management of primary malignant spinal tumours and should be understood as a communication network of specialists involved in the care of primary spinal malignancies. CONCLUSION The developed recommendations together with the national network of expertise should optimize the management of patients with spinal tumours, especially rare malignancies, and optimize their referral and allocation within the Polish national health service system.
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Affiliation(s)
- A Maciejczak
- Department of Neurosurgery, Szpital Wojewódzki Tarnów, University of Rzeszów, Rzeszów, Poland.
| | - R Gasik
- Department of Neuroorthopedics and Neurology, National Geriatrics, Rheumatology and Rehabilitation Institute, Warsaw, Poland
| | - D Kotrych
- Department of Orthopedics, Traumatology and Musculoskeletal Oncology, Pomeranian Medical University, Szczecin, Poland
| | - P Rutkowski
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - K Antoniak
- Department of Orthopedics, Traumatology and Musculoskeletal Oncology, Pomeranian Medical University, Szczecin, Poland
| | - M Derenda
- Department of Neurosurgery, University of Warmia and Mazury, Olsztyn, Poland
| | - K Dobiecki
- Department of Orthopedics, Traumatology and Musculoskeletal Oncology, Pomeranian Medical University, Szczecin, Poland
| | - R Górski
- Department of Neurosurgery and Spine Surgery, John Paul II Western Hospital, Grodzisk Mazowiecki, Poland
| | - L Grzelak
- Department of Neurosurgery, City Hospital, Toruń, Poland
| | - G Guzik
- Department of Oncologic Orthopedics, Sub-Carpathian Oncology Center, Brzozów, Poland
| | - M Harat
- Department of Oncology and Brachytherapy, Oncology Center Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - W Janusz
- Department of Orthopedics and Traumatology, Medical University of Lublin, Lublin, Poland
| | - P Jarmużek
- Department of Neurosurgery, University of Zielona Góra, Zielona Góra, Poland
| | - D Łątka
- Department of Neurosurgery, University of Opole, Opole, Poland
| | - A Maciejczyk
- Department of Oncology, Wroclaw Medical University, Wroclaw, Poland
| | - T Mandat
- Department of Nervous System Neoplasms, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - T Potaczek
- Department of Orthopedics and Rehabilitation, University Hospital Zakopane, Jagiellonian University, Kraków, Poland
| | - M Rocławski
- Department of Orthopaedics, Medical University of Gdansk, Gdańsk, Poland
| | - Ł Trembecki
- Department of Oncology, Wroclaw Medical University, Wroclaw, Poland
| | - R Załuski
- Department of Neurosurgery, Wroclaw Medical University, Wroclaw, Poland
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11
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Primary Sarcomas of the Spine: A Systematic Review and Pooled Data Analysis. Clin Spine Surg 2023:01933606-990000000-00125. [PMID: 36823708 DOI: 10.1097/bsd.0000000000001432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 12/01/2022] [Indexed: 02/25/2023]
Abstract
STUDY DESIGN A systematic review of the literature and pooled data analysis of treatment outcomes of primary sarcomas of the spine. OBJECTIVE To examine the current literature and treatment options for primary sarcomas of the spine. SUMMARY OF BACKGROUND DATA A paucity of literature exists on treatment outcomes of primary sarcomas of the spine. MATERIALS AND METHODS Two authors searched PubMed to identify articles for review, and a pooled data analysis was performed to determine overall survival for each type of surgical resection on spine sarcomas. RESULTS In total, 1776 articles were identified, and 11 met our inclusion criteria for review. In chondrosarcoma, overall survival was significantly higher with en bloc excision when compared with piecemeal resection (HR for piecemeal resection: 4.11; 95% CI: 2.08-8.15). Subgroup analysis showed that the addition of radiation therapy after piecemeal excision increased overall survival to 60 months from 48 months with piecemeal excision alone. In osteosarcoma, there was no significant difference in overall survival between en bloc and piecemeal resection (HR for piecemeal resection: 1.76; 95% CI: 0.776-3.99). In Ewing's sarcoma, overall survival was significantly higher when a successful en bloc resection was achieved and coupled with chemotherapy and radiation therapy for local control (HR for piecemeal resection: 7.96; 95% CI: 2.12-20.1). Interestingly, when a successful en bloc resection could not be achieved, chemotherapy and radiation therapy alone had significantly higher survival than piecemeal resection (HR for piecemeal resection: 2.63; 95% CI: 1.01-6.84). A significantly higher number of local recurrences were associated with the piecemeal resection group in all types of spine sarcomas. CONCLUSION This review and pooled data seem to favor en bloc excision for local control as the treatment of choice in primary sarcomas of the spine.
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12
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Disch AC, Boriani S, Luzzati A, Rhines LD, Fisher CG, Lazary A, Gokaslan ZL, Chou D, Clarke MJ, Fehlings MG, Schaser KD, Germscheid NM, Reynolds JJ. Extradural Primary Malignant Spinal Tumors in a Population Younger than 25 Years: An Ambispective International Multicenter Study on Onco-Surgical Outcomes. Cancers (Basel) 2023; 15:cancers15030845. [PMID: 36765803 PMCID: PMC9913243 DOI: 10.3390/cancers15030845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 01/31/2023] Open
Abstract
Extradural malignant primary spinal tumors are rare and outcome data, especially for younger patients, is limited. In a worldwide (11 centers) study (Predictors of Mortality and Morbidity in the Surgical Management of Primary Tumors of the Spine study; ClinicalTrials.gov Identifier NCT01643174) by the AO Spine Knowledge Forum Tumor, patients surgically treated for primary tumors of the spine between 1992 and 2012, were retrospectively analyzed from a prospective database of their medical history. Medical history, tumor characteristics, diagnostics, treatments, cross-sectional survival, and local recurrences were analyzed. Sixty-eight cases (32 f; 36 m), at an average age of 18.6 ± 4.7 years at the time of diagnosis, were identified (median follow-up 2.9 years). The most common entities were Ewing's sarcoma (42.6%). Of the patients, 28% had undergone previous spine tumor surgery in another center (84% with intralesional margins). Resection was considered "Enneking appropriate" (EA) in 47.8% of the cases. Of the patients, 77.9% underwent chemotherapy and 50% radiotherapy. A local recurrence occurred in 36.4%. Over a third of patients died within a 10-year follow-up period. Kaplan-Meier-analysis demonstrated statistically significant overall survival (p = 0.007) and local recurrence rates (p = 0.042) for tumors treated with EA surgery versus Enneking inappropriate surgery. Aggressive resection of extradural primary malignant spinal tumors combined with adjuvant therapy reveals low local recurrence rates and better outcomes overall in younger patients.
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Affiliation(s)
- Alexander C. Disch
- University Center for Orthopedics, Trauma & Plastic Surgery, University Comprehensive Spine Center (UCSC), University Hospital Carl Gustav Carus Dresden at the TU Dresden, 01307 Dresden, Germany
- Correspondence:
| | | | | | - Laurence D. Rhines
- Department of Neurosurgery, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Charles G. Fisher
- Department of Orthopaedics, Faculty of Medicine, The University of British Columbia, Vancouver, BC V5Z 1M9, Canada
| | - Aron Lazary
- National Center for Spinal Disorders, 1126 Budapest, Hungary
| | - Ziya L. Gokaslan
- Department of Neurosurgery, The Warren Alpert Medical School of Brown University, Rhode Island Hospital and The Miriam Hospital, Providence, RI 02903, USA
| | - Dean Chou
- Department of Neurosurgery, The UCSF Spine Center, University of California, San Francisco, CA 94143, USA
| | | | - Michael G. Fehlings
- Department of Surgery Halbert Chair, Spinal Program University of Toronto, Toronto Western Hospital University Health Network, Toronto, ON M5T 2S8, Canada
| | - Klaus-Dieter Schaser
- University Center for Orthopedics, Trauma & Plastic Surgery, University Comprehensive Spine Center (UCSC), University Hospital Carl Gustav Carus Dresden at the TU Dresden, 01307 Dresden, Germany
| | | | - Jeremy J. Reynolds
- Oxford Spinal Surgery Unit, Oxford University Hospitals, Oxford OX3 7LE, UK
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13
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Disch AC, Boriani S, Lazary A, Rhines LD, Luzzati A, Gokaslan ZL, Fisher CG, Fehlings MG, Clarke MJ, Chou D, Germscheid NM, Schaser KD, Reynolds JJ. Outcomes of Surgical Treatment for Extradural Benign Primary Spinal Tumors in Patients Younger than 25 Years: An Ambispective International Multicenter Study. Cancers (Basel) 2023; 15:cancers15030650. [PMID: 36765605 PMCID: PMC9913733 DOI: 10.3390/cancers15030650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/19/2022] [Accepted: 01/16/2023] [Indexed: 01/24/2023] Open
Abstract
Extradural primary spinal tumors were retrospectively analyzed from a prospective database of 1495 cases. All subjects with benign primary tumors under the age of 25 years, who were enrolled between 1990 and 2012 (Median FU was 2.4 years), were identified. Patient- and case-related characteristics were collected and statistically analyzed. Results: 161 patients (66f;95m; age 17.0 ± 4.7 years at time of diagnosis) were identified. The most common tumors were osteoblastomas n = 53 (32.9%), osteoid osteomas n = 45 (28.0%), and aneurysmal bone cysts n = 32 (19.9%). The tumor grade, according to the Enneking Classification S1/S2/S3, was 14/73/74 (8.7/45.3/46.0%), respectively. Tumor-related pain was present in 156 (96.9%) patients. Diagnosis was achieved by biopsies in 2/3 of the cases. Spinal fixation was used in >50% of the cases. Resection was Enneking appropriate in n = 100 (62.1%) of cases. Local recurrence occurred in 21 (13.1%) patients. Two patients died within a 10-year follow-up period. Conclusion: This is one of the largest international multicenter cohorts of young patients surgically treated for benign spinal tumors. The heterogenic young patient cohort presented at a mid-term follow-up without a correlation between the grade of aggressiveness in resection and local recurrence rates. Further prospective data are required to identify prognostic factors that determine oncological and functional outcomes for young patients suffering from these rare tumors.
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Affiliation(s)
- Alexander C. Disch
- University Center for Orthopedics, Trauma Surgery and Plastic Surgery, University Comprehensive Spine Center, University Hospital Carl Gustav Carus Dresden at the TU Dresden, 01307 Dresden, Germany
- Correspondence:
| | | | - Aron Lazary
- National Center for Spinal Disorders, 1126 Budapest, Hungary
| | - Laurence D. Rhines
- Department of Neurosurgery, MD Anderson Cancer Center, Houston, TX 77030, USA
| | | | - Ziya L. Gokaslan
- Department of Neurosurgery, The Warren Alpert Medical School of Brown University, Rhode Island Hospital and The Miriam Hospital, Providence, RI 02903, USA
| | - Charles G. Fisher
- Department of Orthopaedics, Faculty of Medicine, The University of British Columbia, Vancouver, BC V5Z 1M9, Canada
| | - Michael G. Fehlings
- Department of Surgery Halbert Chair, Spinal Program University of Toronto, Toronto Western Hospital University Health Network, Toronto, ON M5T 2S8, Canada
| | | | - Dean Chou
- Department of Neurosurgery, The UCSF Spine Center, University of California, San Francisco, CA 94143, USA
| | | | - Klaus-Dieter Schaser
- University Center for Orthopedics, Trauma Surgery and Plastic Surgery, University Comprehensive Spine Center, University Hospital Carl Gustav Carus Dresden at the TU Dresden, 01307 Dresden, Germany
| | - Jeremy J. Reynolds
- Oxford Spinal Surgery Unit, Oxford University Hospitals, Oxford OX3 7LE, UK
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14
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Gersey ZC, Zenonos GA, Gardner PA. Malignant Brain and Spinal Tumors Originating from Bone or Cartilage. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1405:477-506. [PMID: 37452950 DOI: 10.1007/978-3-031-23705-8_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Malignant bone tumors affecting the brain and spine are a rare and exceedingly difficult-to-treat group of diseases. Most commonly consisting of chordoma and chondrosarcoma, these tumors also include giant-cell tumors and osteosarcomas. This chapter will cover the background, epidemiology, genetics, molecular biology, histopathology, radiographic features, clinical manifestations, therapeutic approaches, and clinical management of each entity.
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Affiliation(s)
- Zachary C Gersey
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Georgios A Zenonos
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Paul A Gardner
- UPMC Center for Cranial Base Surgery, 200 Lothrop Street, PUH B-400, Pittsburgh, PA, 15213, USA.
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15
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Surmik D, Słowiak-Morkovina J, Szczygielski T, Kamaszewski M, Kalita S, Teschner EM, Dróżdż D, Duda P, Rothschild BM, Konietzko-Meier D. An insight into cancer palaeobiology: does the Mesozoic neoplasm support tissue organization field theory of tumorigenesis? BMC Ecol Evol 2022; 22:143. [PMID: 36513967 PMCID: PMC9746082 DOI: 10.1186/s12862-022-02098-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 12/08/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Neoplasms are common across the animal kingdom and seem to be a feature plesiomorphic for metazoans, related with an increase in somatic complexity. The fossil record of cancer complements our knowledge of the origin of neoplasms and vulnerability of various vertebrate taxa. Here, we document the first undoubted record of primary malignant bone tumour in a Mesozoic non-amniote. The diagnosed osteosarcoma developed in the vertebral intercentrum of a temnospondyl amphibian, Metoposaurus krasiejowensis from the Krasiejów locality, southern Poland. RESULTS A wide array of data collected from gross anatomy, histology, and microstructure of the affected intercentrum reveals the tumour growth dynamics and pathophysiological aspects of the neoplasm formation on the histological level. The pathological process almost exclusively pertains to the periosteal part of the bone composed from a highly vascularised tissue with lamellar matrix. The unorganised arrangement of osteocyte lacunae observed in the tissue is characteristic for bone tissue types connected with static osteogenesis, and not for lamellar bone. The neoplastic bone mimics on the structural level the fast growing fibrolamellar bone, but on the histological level develops through a novel ossification type. The physiological process of bone remodelling inside the endochondral domain continued uninterrupted across the pathology of the periosteal part. CONCLUSIONS Based on the results, we discuss our case study's consistence with the Tissue Organization Field Theory of tumorigenesis, which locates the causes of neoplastic transformations in disorders of tissue architecture.
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Affiliation(s)
- Dawid Surmik
- grid.11866.380000 0001 2259 4135Institute of Earth Sciences, Faculty of Natural Sciences, University of Silesia, Będzińska 60, 41-200 Sosnowiec, Poland
| | - Justyna Słowiak-Morkovina
- grid.413454.30000 0001 1958 0162Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
| | - Tomasz Szczygielski
- grid.413454.30000 0001 1958 0162Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
| | - Maciej Kamaszewski
- grid.13276.310000 0001 1955 7966Institute of Animal Sciences, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland
| | - Sudipta Kalita
- grid.10388.320000 0001 2240 3300Institute of Geosciences, Section Paleontology, University of Bonn, Nussallee 8, 53115 Bonn, Germany
| | - Elżbieta M. Teschner
- grid.10388.320000 0001 2240 3300Institute of Geosciences, Section Paleontology, University of Bonn, Nussallee 8, 53115 Bonn, Germany ,grid.107891.60000 0001 1010 7301Institute of Biology, University of Opole, Oleska 22, 45-052 Opole, Poland
| | - Dawid Dróżdż
- grid.413454.30000 0001 1958 0162Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
| | - Piotr Duda
- grid.11866.380000 0001 2259 4135Faculty of Exact and Technical Sciences, University of Silesia, Będzińska 39, 41-200 Sosnowiec, Poland
| | - Bruce M. Rothschild
- grid.420557.10000 0001 2110 2178Carnegie Museum of Natural History, 4400 Forbes Ave, Pittsburgh, PA 15215 USA
| | - Dorota Konietzko-Meier
- grid.10388.320000 0001 2240 3300Institute of Geosciences, Section Paleontology, University of Bonn, Nussallee 8, 53115 Bonn, Germany
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16
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Lange N, Jörger AK, Ryang YM, Liesche-Starnecker F, Gempt J, Meyer B. Primary Bone Tumors of the Spine—Proposal for Treatment Based on a Single Centre Experience. Diagnostics (Basel) 2022; 12:diagnostics12092264. [PMID: 36140664 PMCID: PMC9498005 DOI: 10.3390/diagnostics12092264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 12/03/2022] Open
Abstract
This study reports a large single-center series of primary bone tumors of the spine (PBTs). We aimed to review the concepts for management, as this kind of tumor represents a very rare entity, and also propose a new treatment algorithm. Retrospective analysis revealed 92 patients receiving surgery for PBTs from 2007 to 2019 at our center. They were analyzed based on surgical management and the course of the disease. A total of 145 surgical procedures were performed (50 cervical, 46 thoracic, 28 lumbar, and 21 sacral). Complete tumor resection was achieved in 65%, of which 22% showed tumor recurrence during follow-up (mean time to recurrence 334 days). The five-year mortality rate was significantly lower after complete resection (3% versus 25% after subtotal resection). Most of the patients improved in their symptoms through surgery. Regarding the tumor entity, the most common PBTs were vertebral hemangiomas (20%), osteoid osteomas (15%), and chordomas (16%). The Enneking graduation system showed a good correlation with the risk of recurrence and mortality. Complete resection in PBTs increased survival rates and remains the method of choice. Thus, quality of life—especially with a higher extent of resection—should be considered.
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Affiliation(s)
- Nicole Lange
- Department of Neurosurgery, Klinikum Rechts der Isar, Technical University, 81675 Munich, Germany
- Correspondence:
| | - Ann-Kathrin Jörger
- Department of Neurosurgery, Klinikum Rechts der Isar, Technical University, 81675 Munich, Germany
| | - Yu-Mi Ryang
- Department of Neurosurgery, Helios Klinikum Berlin-Buch, 13125 Berlin, Germany
| | | | - Jens Gempt
- Department of Neurosurgery, Klinikum Rechts der Isar, Technical University, 81675 Munich, Germany
| | - Bernhard Meyer
- Department of Neurosurgery, Klinikum Rechts der Isar, Technical University, 81675 Munich, Germany
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17
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Utility of expanded anterior column resection versus decompression-alone for local control in the management of carcinomatous vertebral column metastases undergoing adjuvant stereotactic radiotherapy. Spine J 2022; 22:835-846. [PMID: 34718175 DOI: 10.1016/j.spinee.2021.10.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 10/03/2021] [Accepted: 10/19/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT With improvements in adjuvant radiotherapy and minimally invasive surgical techniques, separation surgery has become the default surgical intervention for spine metastases at many centers. However, it is unclear if there is clinical benefit from anterior column resection in addition to simple epidural debulking prior to stereotactic body radiotherapy (SBRT). PURPOSE To examine the effect of anterior column debulking versus epidural disease resection alone in the local control of metastases to the bony spine. STUDY DESIGN Retrospective cohort study. PATIENT SAMPLE Ninety-seven patients who underwent open surgery followed by SBRT for spinal metastases at a single comprehensive cancer center. OUTCOME MEASURES Local tumor recurrence following surgery and SBRT. METHODS Data were collected regarding radiation dose, cancer histology, extent of anterior column resection, and recurrence. Tumor involvement was categorized using the International Spine Radiosurgery Consortium guidelines. Univariable analyses were conducted to determine predictors of local recurrence and time to local recurrence. RESULTS Among the 97 included patients, mean age was 60.5±11.4 years and 51% of patients were male. The most common primary tumor types were lung (20.6%), breast (17.5%), kidney (13.4%) and prostate (12.4%). Recurrence was seen in 17 patients (17.5%) and local control rates were: 85.5% (1-year), 81.1% (2-year), and 54.9% (5-year). Overall predictors of local recurrence were tumor pathology (p<.01; renal cell carcinoma and colorectal adenocarcinoma associated with poorest PFS) and undergoing anterior column debulking versus epidural decompression-alone (p=.03). Only tumor pathology predicted time to local recurrence (p<.01), though inspection of Kaplan-Meier functions showed superior long-term local control in patients with radiosensitive tumor pathologies, no previous irradiation of the metastasis, and who underwent anterior column resection versus epidural removal alone. Median time to recurrence was 288 days with 100% of lesions showing anterior column recurrence and recurrence in the epidural space. CONCLUSIONS With the increasing shift towards surgery as a neoadjuvant to radiotherapy for patients with spinal column metastases, the role for surgical debulking has become less clear. In the present study, we find that anterior column debulking as opposed to epidural debulking-alone decreases the odds of local recurrence and improves long-term local control.
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18
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Tian S, Liu S, Qing X, Lin H, Peng Y, Wang B, Shao Z. A predictive model with a risk-classification system for cancer-specific survival in patients with primary osteosarcoma of long bone. Transl Oncol 2022; 18:101349. [PMID: 35134673 PMCID: PMC8844746 DOI: 10.1016/j.tranon.2022.101349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/07/2021] [Accepted: 01/18/2022] [Indexed: 12/25/2022] Open
Abstract
Seven clinical factors were significantly related to the prognosis of patients with long bone osteosarcoma. The established nomogram can help surgeons evaluate the prognosis of osteosarcoma patients in the most common sites. High-risk individuals can be identified through risk-stratification system.
Background Osteosarcoma (OS), most commonly occurring in long bone, is a group of malignant tumors with high incidence in adolescents. No individualized model has been developed to predict the prognosis of primary long bone osteosarcoma (PLBOS) and the current AJCC TNM staging system lacks accuracy in prognosis prediction. We aimed to develop a nomogram based on the clinicopathological factors affecting the prognosis of PLBOS patients to help clinicians predict the cancer-specific survival (CSS) of PLBOS patients. Method We studied 1199 PLBOS patients from the Surveillance, Epidemiology, and End Results (SEER) database from 2004 to 2015 and randomly divided the dataset into training and validation cohorts at a proportion of 7:3. Independent prognostic factors determined by stepwise multivariate Cox analysis were included in the nomogram and risk-stratification system. C-index, calibration curve, and decision curve analysis (DCA) were used to verify the performance of the nomogram. Results Age, Histological type, Surgery of primary site, Tumor size, Local extension, Regional lymph node (LN) invasion, and Distant metastasis were identified as independent prognostic factors. C-indexes, calibration curves and DCAs of the nomogram indicating that the nomogram had good discrimination and validity. The risk-stratification system based on the nomogram showed significant differences (P < 0.05) in CSS among different risk groups. Conclusion We established a nomogram with risk-stratification system to predict CSS in PLBOS patients and demonstrated that the nomogram had good performance. This model can help clinicians evaluate prognoses, identify high-risk individuals, and give individualized treatment recommendation of PLBOS patients.
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miR-652 Inhibits the Proliferation, Migration, and Invasion of Osteosarcoma Cells by Targeting HOXA9 and Regulating the PI3K/Akt Signaling Pathway. JOURNAL OF ONCOLOGY 2022; 2022:4809312. [PMID: 35111226 PMCID: PMC8803419 DOI: 10.1155/2022/4809312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 12/04/2022]
Abstract
Objective The aim of this study was to investigate the abnormal expression of miR-652 in osteosarcoma and its related mechanism. Materials and Methods Reverse transcription-polymerase chain reaction (RT-PCR) was used to detect the expression of miR-652 and HOXA9 in osteosarcoma tissues and normal tissues. A bioinformatics method was used to predict target genes of miR-652, and then luciferase reporter genes and western blot tests were used to verify expression of target genes. The miR-652 overexpression models were established by transfecting miR-652 mimics into osteosarcoma U-2OS cells, and HOXA9 overexpression models were simultaneously established by transfecting pcDNA3.1-HOXA9 into osteosarcoma U-2OS cells. Cell proliferation ability was detected by the CCK-8 assay, cell migration ability was detected by the scratch test, and cell invasion ability was detected by the Transwell invasion assay. Western blot tests were used to verify the expression of HOXA9, p-PI3K, p-AKT, MMP2 and MMP9. Results miR-652 and HOXA9 showed low expression and overexpression, respectively, in osteosarcoma tissues. Proliferation, invasion, and migration abilities of osteosarcoma cells and the level of protein expression of p-PI3K, p-Akt, MMP2, and MMP9 were significantly decreased with enhanced miR-652 expression (P < 0.01), while overexpression of HOXA9 reversed this situation. The results of dual-luciferase reporter gene showed that expression and activity of HOXA9 were downregulated accordingly, and the level of HOXA9 protein was decreased with enhancing miR-652 expression (P < 0.01). Conclusion miR-652 may negatively regulate HOXA9 expression and inhibit the proliferation, migration, and invasion abilities of osteosarcoma cells through the PI3K/Akt signaling pathway.
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20
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Pillai SS. Long-term survival following resection of extracompartmental osteosarcoma of the spine - A case report and literature review. Surg Neurol Int 2021; 12:545. [PMID: 34877031 PMCID: PMC8645474 DOI: 10.25259/sni_573_2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 07/12/2021] [Indexed: 12/04/2022] Open
Abstract
Background: Osteosarcoma, representing 3% of sarcomas, rarely involves the axial skeleton. The overall 5-year survival is just 18%. Here, we present a 15-year-old female with an extracompartmental osteosarcoma, who following radical spine surgery, chemotherapy, and intensive radiotherapy remained disease-free 15.5 years later. Case Description: A 15-year-old female presented with an acute right lower extremity monoparesis and T4 relative sensory level attributed to a T4 extracompartmental Osteosarcoma. Following circumferential spine surgery, chemotherapy, and radiotherapy, her tumor did not recur over the 15.5-year follow-up period. Conclusion: Osteosarcoma rarely presents focally in the spine. When it originates in the spine, there are typically few long-term survivors. Here, we report a 15-year-old female who presented with an acute monoparesis attributed to an extracompartmental T4 spinal osteosarcoma. Following circumferential tumor resection, adjuvant chemotherapy, and radiotherapy, the patient remains disease-free 15.5 years later.
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Affiliation(s)
- Suresh S Pillai
- Department of Spine Surgery, Baby Memorial Hospital, IG road, Calicut, Kerala, India
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21
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Chapman EK, Valliani AA, Shuman WH, Martini ML, Neifert SN, Gilligan JT, Yuk FJ, Schupper AJ, Gal JS, Caridi JM. Clinical Trials in Spinal Tumors: A Two-Decade Review. World Neurosurg 2021; 161:e39-e53. [PMID: 34861445 DOI: 10.1016/j.wneu.2021.11.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Clinical trials are essential for assessing advancements in spine tumor therapeutics. The purpose of this study is to characterize trends in clinical trials for primary and metastatic tumor treatments over the past two decades. METHODS ClinicalTrials.gov was queried using the search term "spine" for all interventional studies spanning 1999 to 2020 with categories of "Cancer", "Neoplasm", "Tumor", or "Metastasis". Tumor type, phase data, enrollment numbers and home institution country were recorded. The sponsor was categorized as academic institution, industry, government or other and intervention type as procedure, drug, device, radiation or other. Frequency of each category and cumulative frequency over twenty years were calculated. RESULTS 106 registered trials for spine tumors were listed. All except two that began before 2008 have been completed, enrollment of 51-100 subjects (29.8%) was the most common, and the majority were phase II (54.4%). Most examined metastatic tumors (58.5%) and new trials per year increased 3.4-fold between 2009 and 2020. The majority were conducted in the United States (56.4%). The most common intervention strategy was radiation (32.1%), although between 2010-2020 procedural studies became the most frequent (2.4 per year). The majority were sponsored by academic institutions (63.2%), and over twenty years have sponsored 3.2-fold more studies than industry partners. CONCLUSIONS The number of clinical trials for spine tumor therapies has rapidly increased over the past 15 years, driven by studies at United States academic medical institutions investigating radiosurgery for treatment of metastases. Targeted therapies for tumor subtypes and sequelae have updated international best practices.
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Affiliation(s)
- Emily K Chapman
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY.
| | - Aly A Valliani
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY
| | - William H Shuman
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Michael L Martini
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Sean N Neifert
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Jeffrey T Gilligan
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Frank J Yuk
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Alexander J Schupper
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Jonathan S Gal
- Department of Anesthesiology, Perioperative and Pain Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - John M Caridi
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY
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22
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Pennington Z, Westbroek EM, Lo SFL, Sciubba DM. Surgical Approaches to Tumors of the Occipito-Cervical, Subaxial Cervical, and Cervicothoracic Spine: An Algorithm for Standard versus Extended Anterior Cervical Access. World Neurosurg 2021; 156:e41-e56. [PMID: 34508912 DOI: 10.1016/j.wneu.2021.08.121] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To propose a surgical approach algorithm for the tumors of the cervicothoracic spine. METHODS All patients operated for vertebral column tumors involving the occipito-cervicothoracic spine were reviewed. Oncologic characteristics and surgical approach were gathered. Approach was classified by the use of staging and trajectory (posterior, transnasal, transoral, transmandibular, transcervical, transsternal). Angle of attack was defined for the occipitocervical junction tumor as the angle inscribed by the inferior mandibular plane and line connecting the superior tumor pole and mandibular angle. For lesions extending below the thoracic inlet, angle of attack was that inscribed by the plane of the thoracic inlet and the line connecting the jugular notch and inferior tumor pole. RESULTS In total, 115 patients were included (mean age 56.7 years, 64 [56%] male, average size 26.5 cm3, 39 [34%] primary tumors). Sixty-nine (60%) of patients had single-stage procedures (57 [49.6%] posterior-only, 12 [10.4%] anterior-only), 35 (30.4%) had 2-stage procedures, and 11 (9.6%) had 3- or 4-stage approaches. Lesions requiring a combined transmandibular-transcervical approach all involved the C2 and C3 levels and had a significantly steeper angle of attack (42.5 ± 9.5 vs. 6.1 ± 13.3°; P = 0.01) and greater superior tumor extent above the inferior plane of the mandible (3.69 ± 2.18 vs. 0.33 ± 0.78; P = 0.002). Lateral tumor extent, tumor size, nor inferior angle of attack differed significantly between approach groups. CONCLUSIONS Here, we present a preliminary decision-making algorithm for the management of vertebral column tumors of the cervicothoracic spine. Based on this single-center experience, we suggest which patients, assessed via a combination of tumor histology and regional anatomy, may benefit from extended anterior surgical access.
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Affiliation(s)
- Zach Pennington
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Department of Neurosurgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Erick M Westbroek
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Sheng-Fu Larry Lo
- Department of Neurosurgery, Zucker School of Medicine at Hofstra, Long Island Jewish Medical Center and North Shore University Hospital, Northwell Health, Manhasset, New York, USA
| | - Daniel M Sciubba
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Department of Neurosurgery, Zucker School of Medicine at Hofstra, Long Island Jewish Medical Center and North Shore University Hospital, Northwell Health, Manhasset, New York, USA.
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23
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Wide Surgery in the Cervical Spine: Indications, Results, and Complications in a Series of 30 Patients Affected by Primary Bone Tumors. World Neurosurg 2021; 155:e240-e248. [PMID: 34419658 DOI: 10.1016/j.wneu.2021.08.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 08/09/2021] [Accepted: 08/11/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND En bloc surgery is the mainstay treatment for primary malignant bone tumors, as well as in the cervical spine. Unfortunately, literature on the topic is limited to case reports and small series. METHODS We reviewed all patients affected by primary cervical spine bone tumors treated with en bloc surgeries from 1996 to 2016 and identified 30 eligible cases. We evaluated the clinical presentation and tumor characteristics and reported surgical results, complications, recurrence, and survival rates. RESULTS Only 17 of 30 patients had not been previously treated at presentation. Osteosarcoma and chordoma were the most frequent tumors, and pain was reported in all cases. En bloc spondylectomy, hemispondylectomy, and posterior arch en bloc resection were performed in 16, 12, and 2 patients, respectively. The obtained margin was adequate (wide and marginal) in 60% of cases and intralesional in the remaining cases. Two deaths occurred in the immediate postoperative period. Neurological deterioration, dural tear, and dysphagia were the most frequent complications. The 5-year local recurrence-free survival was 70.4%. The recurrence rate was 38.5% and 11.7% in previously and non-previously treated patients, respectively (χ2: 2.94; P = 0.086). Overall survival at 5 years was 58% and 47% for all series and malignant tumors, respectively. CONCLUSION Primary cervical spine bone tumors present a difficult approach. Findings suggest that patients treated with en bloc surgery show recurrence and survival rates comparable to the same tumors located in the thoracolumbar spine.
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24
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Helenius IJ, Krieg AH. Primary malignant bone tumours of spine and pelvis in children. J Child Orthop 2021; 15:337-345. [PMID: 34476023 PMCID: PMC8381392 DOI: 10.1302/1863-2548.15.210085] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/01/2021] [Indexed: 02/03/2023] Open
Abstract
PURPOSE Axial malignant bone tumours are rare in children and adolescents, and their prognosis is still relatively poor due to non-specific symptoms, such as back or groin pain, which may result in late hospital presentation. Therefore, it is very important to raise awareness regarding this pathology. METHODS We performed a narrative review, including scientific publications published in English. We searched Medline and Google Scholar databases for information on the incidence and prognosis of axial malignant bone tumours in children and adolescents (< 18 years). Outcomes of different surgical management strategies and reconstruction options were assessed. RESULTS The incidence of primary malignant bone tumours before the age of 18 years is approximately five per one million population; around 25% of these tumours are located in the axial skeleton. With a five-year survival rate of 50%, tumours in an axial location (chest cage, spine, pelvis) are associated with a poorer prognosis than tumours in more peripheral locations. En bloc excision with clear margins has been shown to improve local control and overall survival, even though obtaining adequate surgical margins is difficult due to the close location of large neurovascular structures and other major organs. Spinal reconstruction options include instrumented fusion with allograft or expandable cage. Pelvic reconstruction is needed in internal hemipelvectomy, and the options include biological, endoprosthetic reconstructions, hip transposition, arthrodesis or creation of pseudoarthrosis and lumbopelvic instrumentation. CONCLUSION Early diagnosis, a timely adequate multidisciplinary management, appropriate en bloc excision, and reconstruction improve survival and quality of life in these patients. LEVEL OF EVIDENCE V.
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Affiliation(s)
- Ilkka J. Helenius
- Department of Orthopedics and Traumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland,Correspondence should be sent to Professor Ilkka Helenius, MD, Department of Orthopaedics and Traumatology, University of Helsinki and Helsinki University Hospital, Topeliuksenkatu 5, FI-00260, Helsinki Finland. E-mail:
| | - Andreas H. Krieg
- Orthopaedic Department, University Children’s Hospital (UKBB), Basel, Switzerland
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25
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Jawad MU, Farhan S, Haffner MR, Le HV, Thorpe SW, Klineberg EO, Randall RL. Primary mobile vertebral column sarcomas: Prognostic factors vary by histologic subtypes. J Surg Oncol 2021; 124:635-645. [PMID: 34091907 DOI: 10.1002/jso.26530] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/08/2021] [Accepted: 05/09/2021] [Indexed: 01/23/2023]
Abstract
BACKGROUND Primary sarcomas originating from the mobile spine portends a particularly sinister outcome. Rarity of the disease process has resulted in inconsistent data due to small sample size and heterogeneity in patient selection and analytics. METHODS Surveillance, Epidemiology and End Result (SEER) database from 1975 to 2017 was queried to report incidence and survival data in 712 patients in the United States. Kaplan-Meier and Cox Regression were used to determine the prognostic factors affecting survival. RESULTS Incidence of spinal sarcoma was 0.019 per 100,000 persons in 2017 and has not significantly changed since 2000 (p > 0.05). Disease-specific 5-year survival for the entire cohort was 57%. Osteosarcoma has the worst 5-year survival (39%) and chondrosarcoma has the best 5-year survival (69%). Independent predictors of survival for the entire cohort included age, grade, and stage. Stage was an independent predictor of survival for every histologic subtype. Additional predictors of survival for spinal osteosarcoma, Ewing sarcoma, and chondrosarcoma included age, size, and grade, respectively. CONCLUSIONS The current study is an analysis of a population-based registry reporting incidence survival data for patients with sarcoma of mobile vertebral column. Survival and prognostic factors vary by histologic subtypes. There is lack of improvement in survival over the last three decades.
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Affiliation(s)
- Muhammad U Jawad
- Department of Orthopaedic Surgery, University of California-Davis, Sacramento, California, USA
| | - Saif Farhan
- Department of Orthopaedic Surgery, University of California-Davis, Sacramento, California, USA
| | - Max R Haffner
- Department of Orthopaedic Surgery, University of California-Davis, Sacramento, California, USA
| | - Hai Van Le
- Department of Orthopaedic Surgery, University of California-Davis, Sacramento, California, USA
| | - Steven W Thorpe
- Department of Orthopaedic Surgery, University of California-Davis, Sacramento, California, USA
| | - Eric O Klineberg
- Department of Orthopaedic Surgery, University of California-Davis, Sacramento, California, USA
| | - R Lor Randall
- Department of Orthopaedic Surgery, University of California-Davis, Sacramento, California, USA
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26
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Dandurand C, Fisher CG, Rhines LD, Boriani S, Charest-Morin R, Gasbarrini A, Luzzati A, Reynolds JJ, Wei F, Gokaslan ZL, Bettegowda C, Sciubba DM, Lazary A, Kawahara N, Clarke MJ, Rampersaud YR, Disch AC, Chou D, Shin JH, Hornicek FJ, Laufer II, Sahgal A, Dea N. Feasibility of achieving planned surgical margins in primary spine tumor: a PTRON study. Neurosurg Focus 2021; 50:E16. [PMID: 33932923 DOI: 10.3171/2021.2.focus201091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/22/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Oncological resection of primary spine tumors is associated with lower recurrence rates. However, even in the most experienced hands, the execution of a meticulously drafted plan sometimes fails. The objectives of this study were to determine how successful surgical teams are at achieving planned surgical margins and how successful surgeons are in intraoperatively assessing tumor margins. The secondary objective was to identify factors associated with successful execution of planned resection. METHODS The Primary Tumor Research and Outcomes Network (PTRON) is a multicenter international prospective registry for the management of primary tumors of the spine. Using this registry, the authors compared 1) the planned surgical margin and 2) the intraoperative assessment of the margin by the surgeon with the postoperative assessment of the margin by the pathologist. Univariate analysis was used to assess whether factors such as histology, size, location, previous radiotherapy, and revision surgery were associated with successful execution of the planned margins. RESULTS Three hundred patients were included. The surgical plan was successfully achieved in 224 (74.7%) patients. The surgeon correctly assessed the intraoperative margins, as reported in the final assessment by the pathologist, in 239 (79.7%) patients. On univariate analysis, no factor had a statistically significant influence on successful achievement of planned margins. CONCLUSIONS In high-volume cancer centers around the world, planned surgical margins can be achieved in approximately 75% of cases. The morbidity of the proposed intervention must be balanced with the expected success rate in order to optimize patient management and surgical decision-making.
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Affiliation(s)
- Charlotte Dandurand
- 1Combined Neurosurgical and Orthopaedic Spine Program, University of British Columbia, Vancouver, British Columbia, Canada
| | - Charles G Fisher
- 1Combined Neurosurgical and Orthopaedic Spine Program, University of British Columbia, Vancouver, British Columbia, Canada
| | | | | | - Raphaële Charest-Morin
- 1Combined Neurosurgical and Orthopaedic Spine Program, University of British Columbia, Vancouver, British Columbia, Canada
| | | | | | | | - Feng Wei
- 6Peking University Third Hospital, Beijing, China
| | | | | | - Daniel M Sciubba
- 8Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Aron Lazary
- 9National Center for Spinal Disorders, Budapest, Hungary
| | | | | | | | | | - Dean Chou
- 14University of California, San Francisco, California
| | - John H Shin
- 15Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | | | - IIya Laufer
- 17Memorial Sloan Kettering Cancer Center, New York, New York; and
| | - Arjun Sahgal
- 18Sunnybrook Hospital, University of Toronto, Ontario, Canada
| | - Nicolas Dea
- 1Combined Neurosurgical and Orthopaedic Spine Program, University of British Columbia, Vancouver, British Columbia, Canada
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27
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Pennington Z, Ehresman J, Elsamadicy AA, Shin JH, Goodwin CR, Schwab JH, Sciubba DM. Systematic review of charged-particle therapy for chordomas and sarcomas of the mobile spine and sacrum. Neurosurg Focus 2021; 50:E17. [PMID: 33932924 DOI: 10.3171/2021.2.focus201059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 02/23/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Long-term local control in patients with primary chordoma and sarcoma of the spine and sacrum is increasingly reliant upon en bloc resection with negative margins. At many institutions, adjuvant radiation is recommended; definitive radiation is also recommended for the treatment of unresectable tumors. Because of the high off-target radiation toxicities associated with conventional radiotherapy, there has been growing interest in the use of proton and heavy-ion therapies. The aim of this study was to systematically review the literature regarding these therapies. METHODS The PubMed, OVID, Embase, and Web of Science databases were queried for articles describing the use of proton, combined proton/photon, or heavy-ion therapies for adjuvant or definitive radiotherapy in patients with primary sarcoma or chordoma of the mobile spine and sacrum. A qualitative synthesis of the results was performed, focusing on overall survival (OS), progression-free survival (PFS), disease-free survival (DFS), and disease-specific survival (DSS); local control; and postradiation toxicities. RESULTS Of 595 unique articles, 64 underwent full-text screening and 38 were included in the final synthesis. All studies were level III or IV evidence with a high risk of bias; there was also significant overlap in the reported populations, with six centers accounting for roughly three-fourths of all reports. Five-year therapy outcomes were as follows: proton-only therapies, OS 67%-82%, PFS 31%-57%, and DFS 52%-62%; metastases occurred in 17%-18% and acute toxicities in 3%-100% of cases; combined proton/photon therapy, local control 62%-85%, OS 78%-87%, PFS 90%, and DFS 61%-72%; metastases occurred in 12%-14% and acute toxicities in 84%-100% of cases; and carbon ion therapy, local control 53%-100%, OS 52%-86%, PFS (only reported for 3 years) 48%-76%, and DFS 50%-53%; metastases occurred in 2%-39% and acute toxicities in 26%-48%. There were no studies directly comparing outcomes between photon and charged-particle therapies or comparing outcomes between radiation and surgical groups. CONCLUSIONS The current evidence for charged-particle therapies in the management of sarcomas of the spine and sacrum is limited. Preliminary evidence suggests that with these therapies local control and OS at 5 years are comparable among various charged-particle options and may be similar between those treated with definitive charged-particle therapy and historical surgical cohorts. Further research directly comparing charged-particle and photon-based therapies is necessary.
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Affiliation(s)
- Zach Pennington
- 1Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Jeff Ehresman
- 1Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Aladine A Elsamadicy
- 2Department of Neurosurgery, Yale University School of Medicine, New Haven, Connecticut
| | - John H Shin
- 3Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - C Rory Goodwin
- 4Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina; and
| | - Joseph H Schwab
- 5Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Daniel M Sciubba
- 1Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Wang Y, Wu Y, Cai A, Ma C, Cai S, Wang H, Que Y, Xu S, Xu T, Hu Y. Cisplatin inhibits the proliferation of Saos-2 osteosarcoma cells via the miR-376c/TGFA pathway. Bosn J Basic Med Sci 2021; 21:163-173. [PMID: 32020849 PMCID: PMC7982073 DOI: 10.17305/bjbms.2020.4485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 12/06/2019] [Indexed: 11/22/2022] Open
Abstract
The transforming growth factor alpha (TGFA) gene is involved in the proliferation and metastasis of various tumors, but its role in cell sensitivity to cisplatin chemotherapy is unclear. In this study, we investigated the mechanism underlying inhibitory effects of cisplatin on growth and proliferation of osteosarcoma cells. Osteosarcoma and normal skeletal muscle tissues were collected from 26 patients by biopsy. TGFA was silenced or overexpressed in Saos-2 osteosarcoma cells by transfection with TGFA-shRNA or TGFA ORF clone, respectively. MiR-376c was inhibited or overexpressed by transfection of Saos-2 cells with miR-376c sponge or miR-376c mimics, respectively. Cell growth was analyzed by MTT assay and cell proliferation by BrdU assay. MiR-376c and TGFA mRNA expression was detected by quantitative reverse transcription PCR and TGFA protein expression by Western blot. The target relationship between miR-376c and TGFA was assessed by luciferase reporter assay. Both in osteosarcoma tissues and Saos-2 cells, miR-376c expression was significantly decreased and TGFA mRNA expression was significantly increased compared with control. Transfection of Saos-2 cells with TGFA-shRNA silenced TGFA expression and significantly inhibited cell growth and proliferation. TGFA mRNA and protein expression in Saos-2 cells significantly decreased with increasing cisplatin concentrations (2.5–10 mg/L). Transfection with TGFA ORF clone reversed the inhibitory effects of cisplatin on Saos-2 cell proliferation. Compared with cisplatin (10 mg/L) treatment alone, the combined treatment with cisplatin and miR-376c mimics inhibited the proliferation of Saos-2 cells more significantly. MiR-376c suppressed TGFA expression by directly interacting with its 3’ UTR region. Overall, cisplatin inhibited the proliferation of Saos-2 cells by upregulating miR-376c and downregulating TGFA expression.
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Affiliation(s)
- Yuan Wang
- Department of Orthopedic Disease and Oncology Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yichao Wu
- Department of Orthopedics, Fourth Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Awei Cai
- Department of Orthopedic Disease and Oncology Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Chengxiao Ma
- Department of Orthopedic Disease and Oncology Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Shang Cai
- Department of Orthopedic Disease and Oncology Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Hao Wang
- Department of Orthopedic Disease and Oncology Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yukang Que
- Department of Orthopedic Disease and Oncology Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Shenglin Xu
- Department of Orthopedic Disease and Oncology Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Tangbing Xu
- Department of Orthopedics, Fourth Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yong Hu
- Department of Orthopedic Disease and Oncology Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
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Zhang L, Akiyama T, Fukushima T, Iwata S, Takeshita K, Kawai A, Tanaka S, Kobayashi H. Surgical resection of the primary lesion for osteosarcoma patients with metastasis at initial diagnosis. Jpn J Clin Oncol 2021; 51:416-423. [PMID: 33230543 DOI: 10.1093/jjco/hyaa204] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 10/07/2020] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Approximately 10-20% of osteosarcoma patients present with metastasis on diagnosis. Completely resecting the lesion is associated with better prognosis. However, evidence regarding optimal surgical strategies for patients with unresectable metastasis is limited. METHODS This retrospective analysis was based on the Japanese Nationwide Bone and Soft Tissue Tumor registry. In total, 335 patients diagnosed with osteosarcoma with metastasis were included. Factors affecting overall survival were identified using multivariate analysis. Kaplan-Meier method was used to compare the overall survival by the status of surgical intervention. Two hundred and four patients who did not undergo surgery for metastasis were divided into two groups, depending on whether they underwent surgery for the primary lesion. The background differences between these two groups were adjusted with propensity score matching, with 43 patients per group. The overall survival was calculated using the Kaplan-Meier method and compared with a log-rank test. RESULTS Factors positively impacting overall survival were age <40, female sex, extremity origin, surgery for the primary lesions, surgery for metastasis and radiotherapy without surgery. For patients with unresectable metastasis, after propensity score matching, the survival rate was higher in the group that underwent primary lesion surgery than the group without surgery. Their median survival was 19 (95% confidence interval: 11.7-26.3) and 11 months (95% confidence interval: 4.5-17.5) (P = 0.02), respectively. CONCLUSIONS Surgical resection of the primary osteosarcoma lesion did not worsen prognosis, even in patients with unresectable metastasis. Further study is needed to identify which patient group will benefit from primary lesion resection.
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Affiliation(s)
- Liuzhe Zhang
- Department of Orthopedic Surgery, The University of Tokyo, Tokyo, Japan
| | - Toru Akiyama
- Department of Orthopedic Surgery, Jichi Medical University Saitama Medical Center, Saitama, Japan
| | - Takashi Fukushima
- Department of Orthopedic Surgery, Jichi Medical University Saitama Medical Center, Saitama, Japan
| | - Shintaro Iwata
- Department of Musculoskeletal Oncology and Rehabilitation, National Cancer Center Hospital, Tokyo, Japan
| | - Katsushi Takeshita
- Department of Orthopedic Surgery, Jichi Medical University, Tochigi, Japan
| | - Akira Kawai
- Department of Musculoskeletal Oncology and Rehabilitation, National Cancer Center Hospital, Tokyo, Japan
| | - Sakae Tanaka
- Department of Orthopedic Surgery, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Kobayashi
- Department of Orthopedic Surgery, The University of Tokyo, Tokyo, Japan
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Meazza C, Luksch R, Luzzati A. Managing axial bone sarcomas in childhood. Expert Rev Anticancer Ther 2021; 21:747-764. [PMID: 33593222 DOI: 10.1080/14737140.2021.1891886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Introduction: Axial osteosarcoma and Ewing sarcoma are rare, aggressive neoplasms with a worse prognosis than with tumors involving the extremities because they are more likely to be associated with larger tumor volumes, older age, primary metastases, and a poor histological response to chemotherapy. The 5-year OS rates are reportedly in the range of 18-41% for axial osteosarcoma, and 46-64% for Ewing sarcoma.Area covered: The treatment of axial bone tumors is the same as for extremity bone tumors, and includes chemotherapy, surgery and/or radiotherapy.Expert opinion: Local treatment of axial tumors is particularly difficult due to their proximity to neurological and vascular structures, which often makes extensive and en bloc resections impossible without causing significant morbidity. The incidence of local relapse is consequently high, and this is the main issue in the treatment of these tumors. Radiotherapy is an option in the case of surgical resections with close or positive margins, as well as for inoperable tumors. Delivering high doses of RT to the spinal cord can be dangerous. Given the complexity and rarity of these tumors, it is essential for this subset of patients to be treated at selected reference institutions with specific expertise and multidisciplinary skills.
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Affiliation(s)
- Cristina Meazza
- Pediatric Oncology Unit, Medical Oncology and Emathology Department, Fondazione IRCCS Istituto Nazionale Dei Tumori, Milano, Italy
| | - Roberto Luksch
- Pediatric Oncology Unit, Medical Oncology and Emathology Department, Fondazione IRCCS Istituto Nazionale Dei Tumori, Milano, Italy
| | - Alessandro Luzzati
- Orthopedic Oncology and Spinal Reconstruction Surgery, Orthopedic Oncology Department, IRCCS Istituto Ortopedico Galeazzi, Milano, Italy
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Oitment C, Bozzo A, Martin AR, Rienmuller A, Jentzsch T, Aoude A, Thornley P, Ghert M, Rampersaud R. Primary sarcomas of the spine: population-based demographic and survival data in 107 spinal sarcomas over a 23-year period in Ontario, Canada. Spine J 2021; 21:296-301. [PMID: 32949731 DOI: 10.1016/j.spinee.2020.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/30/2020] [Accepted: 09/06/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND CONTEXT Spinal sarcomas are a rare, heterogeneous group of mesenchymal tumors. Current literature reporting demographic variables and survival information is limited to small case series, and a single registry with variable treatment modalities and time periods. PURPOSE We report on population-level data regarding all spinal sarcomas diagnosed over a 23-year period in Ontario, Canada, for the purposes of calculating incidence and prevalence of these tumors. Secondarily, survival is assessed by tumor type as well as adjuvant therapies during this time period. STUDY DESIGN Retrospective Cohort Study PATIENT SAMPLE: Population-based data from the Institute for Clinical Evaluative Sciences (ICES) between 1993 and 2015. OUTCOME MEASURES Outcome measures include incidence and prevalence of spinal osteosarcoma, Ewing's sarcoma, and chondrosarcoma of the spine, as well as 2-, 5-, 10- and 15-year survival and prevalence of adjuvant therapies. METHODS Utilizing population-based data from the Institute for Clinical Evaluative Sciences (ICES) between 1993 and 2015, ICD codes were searched and available data extracted for the purposes of reporting basic demographic information and calculation of Kaplan Meyer survival curves. Databases include the Ontario Cancer Registry, Discharge Abstract Database, Ontario Health Insurance Plan, National Ambulatory Care Reporting System, Registered Persons DataBase (death) were analyzed. RESULTS One hundred and seven spinal sarcomas were identified, with a mean incidence was 0.38 sarcomas per million population per year, that was stable over time. The mean prevalence was 8.1 sarcomas per million population. The most common diagnosis was Ewing's sarcoma (48 [44.9%] patients), followed by chondrosarcoma (33 [30.8%] patients), and osteosarcoma (26 [24.3%] patients). Chondrosarcoma had the highest survival rates with 77.2% and 64.2% 5- and 10-year survival rates, respectively, followed by Ewing's sarcoma with 48.1% and 44.9% 5 and 10-year survival and osteosarcoma with 36.0% and 30.9% 5- and 10-year survival. CONCLUSIONS Spinal sarcoma is a rare disease with variable survival depending on the histologic diagnosis. This population-level study involves a heterogeneous group of patients with variable stages of disease at presentation and variable treatments. Our data fit with the published literature for survival for those treated conservatively and surgically. Our data show considerable improvement in 5- and 10-year mortality when compared with previous population level studies on earlier patient cohorts, likely reflecting improvements in systemic and surgical treatments.
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Affiliation(s)
- Colby Oitment
- Division of Orthopedic Surgery, Department of Surgery, University of Toronto, Toronto Western Hospital, 237 Barton St E, Hamilton, Ontario L8L2X2, Canada; Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
| | - Anthony Bozzo
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Allan R Martin
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto Western Hospital, 237 Barton St E, Hamilton, Ontario L8L2X2, Canada
| | - Anna Rienmuller
- Division of Orthopedic Surgery, Department of Surgery, University of Toronto, Toronto Western Hospital, 237 Barton St E, Hamilton, Ontario L8L2X2, Canada
| | - Thorsten Jentzsch
- Division of Orthopedic Surgery, Department of Surgery, University of Toronto, Toronto Western Hospital, 237 Barton St E, Hamilton, Ontario L8L2X2, Canada; Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Ahmed Aoude
- Hamilton Health Sciences, Juravinski Hospital and Cancer Center, Hamilton, Ontario, Canada; Division of Orthopedic Oncology, University of Toronto, Mt. Siani Hospital, Toronto, Ontario, Canada
| | - Patrick Thornley
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Michelle Ghert
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada; Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Raja Rampersaud
- Division of Orthopedic Surgery, Department of Surgery, University of Toronto, Toronto Western Hospital, 237 Barton St E, Hamilton, Ontario L8L2X2, Canada
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Surgical Advances in Osteosarcoma. Cancers (Basel) 2021; 13:cancers13030388. [PMID: 33494243 PMCID: PMC7864509 DOI: 10.3390/cancers13030388] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/17/2021] [Accepted: 01/18/2021] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Osteosarcoma (OS) is the most common bone cancer in children. OS most commonly arises in the legs, but can arise in any bone, including the spine, head or neck. Along with chemotherapy, surgery is a mainstay of OS treatment and in the 1990s, surgeons began to shift from amputation to limb-preserving surgery. Since then, improvements in imaging, surgical techniques and implant design have led to improvements in functional outcomes without compromising on the cancer outcomes for these patients. This paper summarises these advances, along with a brief discussion of future technologies currently in development. Abstract Osteosarcoma (OS) is the most common primary bone cancer in children and, unfortunately, is associated with poor survival rates. OS most commonly arises around the knee joint, and was traditionally treated with amputation until surgeons began to favour limb-preserving surgery in the 1990s. Whilst improving functional outcomes, this was not without problems, such as implant failure and limb length discrepancies. OS can also arise in areas such as the pelvis, spine, head, and neck, which creates additional technical difficulty given the anatomical complexity of the areas. We reviewed the literature and summarised the recent advances in OS surgery. Improvements have been made in many areas; developments in pre-operative imaging technology have allowed improved planning, whilst the ongoing development of intraoperative imaging techniques, such as fluorescent dyes, offer the possibility of improved surgical margins. Technological developments, such as computer navigation, patient specific instruments, and improved implant design similarly provide the opportunity to improve patient outcomes. Going forward, there are a number of promising avenues currently being pursued, such as targeted fluorescent dyes, robotics, and augmented reality, which bring the prospect of improving these outcomes further.
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Abstract
STUDY DESIGN Case series. OBJECTIVE For each of the most frequent clinical scenarios, the authors reached a consensus on how should be timing and indications be optimized to reduce risk while maintaining the expected outcomes under the Covid-19 pandemics. SUMMARY OF BACKGROUND DATA The organization of health care has been changed by the Covid-19 pandemic with a direct impact on Spine Oncology Surgery. Emergency surgery is still a priority, but in case of spinal tumors it should be better defined which conditions require emergency treatment. METHODS An expert panel with general spine surgeons, oncological spine surgeons, and radiation oncologists was formed to analyze the most frequent scenarios in spinal musculoskeletal oncology during Covid-19 pandemics. RESULTS Spine metastases can be found incidentally during follow-up or can clinically occur by increasing pain, pathologic fracture, and/or neurological symptoms. Primary spine tumors are much more rare and very rarely present with acute onset. The first step is to suspect this rare condition, to avoid to treat a primary tumor as it were a metastasis. Most complex surgery, like en bloc resection, associated with high morbidity and mortality rate for the treatment of low grade malignancy like chordoma or chondrosarcomas, if intensive care unit availability is reduced, can be best delayed some weeks, as not impacting on prognosis, due to the slow growth rate of these conditions. The currently accepted protocols for Ewing sarcoma (ES) and osteogenic sarcoma must be performed for local and systemic disease control. For ES, after the first courses of chemotherapy, radiotherapy can be selected instead of surgery, during Covid-19, to the end of the full course of chemotherapy. In immunocompromised patients, (treated by chemotherapy), it is necessary to avoid contact with affected or exposed people. CONCLUSION Even more than during normal times, a multidisciplinary approach is mandatory to share the decision to modify a treatment strategy. LEVEL OF EVIDENCE 5.
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Gao Z, Zhou S, Song H, Wang Y, He X. Nomograms for predicting overall survival and cancer-specific survival of chondroblastic osteosarcoma patients. J Surg Oncol 2020; 122:1676-1684. [PMID: 32862456 DOI: 10.1002/jso.26185] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 07/23/2020] [Accepted: 08/11/2020] [Indexed: 01/18/2023]
Abstract
BACKGROUND The establishment of precise and personalized prediction systems for chondroblastic osteosarcoma patients is important for guiding the treatment. METHODS The univariate logrank test and multivariate Cox regression analysis were performed to identify independent prognostic factors for overall survival (OS) and cancer-specific survival (CSS). Nomograms were constructed to estimate the OS and CSS based on these factors. Internal and external validation was performed. The predictive power of the nomograms was determined by C-index and calibration plots. RESULTS A total of 401 chondroblastic osteosarcoma cases were identified. Univariate and multivariate analysis revealed that age at diagnosis, histological grade, tumor size, Surveillance, Epidemiology, and End Results stage, and surgical resection were independent prognostic factors for OS and CSS. The five factors were incorporated to construct the nomograms for estimating the 3- and 5-year OS and CSS. The C-index values for the internal validation of the OS and CSS nomogram were 0.732 and 0.746, respectively, and for the external validation were 0.780 and 0.808, respectively. The calibration curves revealed that the predicted OS and CSS could well match the actual survival rate. CONCLUSIONS The nomograms for predicting 3- and 5-year OS and CSS were constructed and were proved to be accurate and reliable by the internal and external validation.
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Affiliation(s)
- Zhongyang Gao
- Department of Orthopedic Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Songlin Zhou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Hui Song
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yiqun Wang
- Department of Orthopedics, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xijing He
- Department of Orthopedics, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Can Osteoblastoma Evolve to Malignancy? A Challenge in the Decision-Making Process of a Benign Spine Tumor. World Neurosurg 2020; 136:150-156. [DOI: 10.1016/j.wneu.2019.11.148] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 11/24/2019] [Accepted: 11/25/2019] [Indexed: 11/23/2022]
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Abstract
Chordomas are rare tumors of the axial skeleton whose slow growth belies a relentless tumor with a propensity for recurrence and late metastasis. Local control remains an issue with chordoma in spite of aggressive operative management. High local failure rates have led to the exploration of alternative methods of treatment. Radiation continues to gain acceptance as an adjuvant to surgery and, in some cases, as a standalone treatment. However, the use of radiation remains controversial, and operative management remains the standard of care in spite of relatively high morbidity.
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Affiliation(s)
- Michiel E R Bongers
- Orthopaedic Oncology Service, Massachusetts General Hospital - Harvard Medical School, Yawkey Building, Room 3.550, 55 Fruit Street, Boston, MA 02114, USA.
| | - Nicolas Dea
- Division of Spine Surgery, Vancouver General Hospital and the University of British Columbia, Blusson Spinal Cord Center, 6th Floor, 818 West 10th Avenue, Vancouver, British Columbia V5Z 1M9, Canada
| | - Christopher P Ames
- Department of Neurological Surgery, University of California, San Francisco, Medical Center, 400 Parnassus Avenue, San Francisco, CA 94143, USA
| | - Joseph H Schwab
- Orthopaedic Oncology Service, Massachusetts General Hospital - Harvard Medical School, Yawkey Building, Room 3.922, 55 Fruit Street, Boston, MA 02114, USA
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Barber SM, Konakondla S, Nakhla J, Fridley JS, Xia J, Oyelese AA, Telfeian AE, Gokaslan ZL. Spinal dural resection for oncological purposes: a systematic analysis of risks and outcomes in patients with malignant spinal tumors. J Neurosurg Spine 2020; 32:69-78. [PMID: 31628279 DOI: 10.3171/2019.7.spine19477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 07/24/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Oncological outcomes for many malignant primary spinal tumors and isolated spinal metastases have been shown to correlate with extent of resection. For tumors with dural involvement, some authors have described spinal dural resection at the time of tumor resection in the interest of improving oncological outcomes. The complication profile associated with resection of the spinal dura for oncological purposes, however, and the relative influence of resecting tumor-involved dura on progression-free survival are not well defined. The authors performed a systematic review of the literature and identified cases in which the spinal dura was resected for oncological purposes in the interest of better understanding the associated risks and outcomes of this technique. METHODS Electronic databases (PubMed/MEDLINE, Scopus) were systematically searched to identify studies that reported clinical and/or oncological outcomes of patients with malignant spinal neoplasms undergoing resection of tumor-involved dura at the time of surgical intervention. RESULTS Ten articles describing 15 patients were included in the analysis. The most common tumor histologies were chordoma (3/15, 20%), giant cell tumor (3/15, 20%), epithelioid sarcoma (2/15, 13.3%), osteosarcoma (2/15, 13.3%), and metastasis (2/15, 13.3%). Procedure-related complications were reported in 40% of patients. A trend was seen toward an increased complication rate in redo (66.7%) versus index (16.7%) operations, but this trend did not reach statistical significance (p = 0.24). New, unexpected postoperative neurological deficits were seen in 3 patients (of 14 reporting, 21.4%). A single patient experienced a profound, unexpected neurological deterioration (paraparesis/paraplegia) after surgery, which reportedly improved considerably at latest follow-up. Tumor recurrence was seen in 3 cases (of 12 reporting, 25%) at a mean of 28.34 ± 21.1 months postoperatively. The overall mean radiographic follow-up period was 49.6 ± 36.5 months. CONCLUSIONS Resection of the spinal dura for oncological purposes is rarely performed, although a limited number of reports and small series have demonstrated that it is feasible. Spinal dural resection is primarily performed in patients with isolated, primary spinal neoplasms with an intent to cure. The risk associated with spinal dura resection is nontrivial and the complication profile is significant. The influence of dural resection on oncological outcomes is not well defined, and further study is needed before definitive conclusions may be drawn regarding the oncological benefit of dural resection for any particular patient or pathology.
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Affiliation(s)
- Sean M Barber
- 1Department of Neurosurgery, Rhode Island Hospital, The Warren Alpert Medical School at Brown University, Providence, Rhode Island
- 2Department of Neurosurgery, Houston Methodist Neurological Institute, Houston, Texas; and
| | - Sanjay Konakondla
- 1Department of Neurosurgery, Rhode Island Hospital, The Warren Alpert Medical School at Brown University, Providence, Rhode Island
| | - Jonathan Nakhla
- 1Department of Neurosurgery, Rhode Island Hospital, The Warren Alpert Medical School at Brown University, Providence, Rhode Island
| | - Jared S Fridley
- 1Department of Neurosurgery, Rhode Island Hospital, The Warren Alpert Medical School at Brown University, Providence, Rhode Island
| | - Jimmy Xia
- 3Weill Cornell Medical College, New York, New York
| | - Adetokunbo A Oyelese
- 1Department of Neurosurgery, Rhode Island Hospital, The Warren Alpert Medical School at Brown University, Providence, Rhode Island
| | - Albert E Telfeian
- 1Department of Neurosurgery, Rhode Island Hospital, The Warren Alpert Medical School at Brown University, Providence, Rhode Island
| | - Ziya L Gokaslan
- 1Department of Neurosurgery, Rhode Island Hospital, The Warren Alpert Medical School at Brown University, Providence, Rhode Island
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Kerr DL, Dial BL, Lazarides AL, Catanzano AA, Lane WO, Blazer DG, Brigman BE, Mendoza-Lattes S, Eward WC, Erickson ME. Epidemiologic and survival trends in adult primary bone tumors of the spine. Spine J 2019; 19:1941-1949. [PMID: 31306757 DOI: 10.1016/j.spinee.2019.07.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 07/01/2019] [Accepted: 07/09/2019] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Malignant primary spinal tumors are rare making it difficult to perform large studies comparing epidemiologic, survival, and treatment trends. We investigated the largest registry of primary bone tumors, the National Cancer Database (NCDB), to compare epidemiologic and survival trends among these tumors. PURPOSE To use the NCDB to describe current epidemiologic trends, treatment modalities, and overall survival rates in patients with chordomas, osteosarcomas, chondrosarcomas, and Ewing sarcomas of the mobile spine. The secondary objective was to determine prognostic factors that impact overall survival rates. STUDY DESIGN Retrospective study. PATIENT SAMPLE A total of 1,011 patients with primary bone tumors of the spine (377 chordomas, 223 chondrosarcomas, 278 Ewing sarcomas, and 133 osteosarcomas). OUTCOME MEASURES Five-year survival. METHODS We reviewed the records of 1,011 patients in the NCDB from 2004 through 2015 with histologically confirmed primary osteosarcoma, chondrosarcoma, Ewing sarcoma, or chordoma of the spine. Demographic, clinical, and outcomes data were compiled and compared using chi-squared tests and ANOVA. Long-term survival was compared using the Kaplan-Meier method with statistical comparisons based on the log-rank test. Multivariate analysis was performed to determine survival determinants. RESULTS Surgical resection was the primary mode of treatment for chondrosarcoma (90%), chordoma (84%), and osteosarcoma (80%). The treatment for Ewing sarcoma was multimodal involving chemotherapy, radiation therapy, and surgical resection. Five-year survival rates varied significantly with chordomas and chondrosarcomas having the greatest survival (70% and 69%), osteosarcomas having the worse survival (38%), and Ewing having intermediate 5-year survival at 62% (overall log-rank p<.0001). Multivariate analysis demonstrated significantly improved 5-year survival rates with younger age at diagnosis, private insurance status, lower comorbidity score, lower tumor grade, smaller tumor size, surgical resection, and negative surgical margin. Radiation therapy only improved survival for Ewing sarcoma. CONCLUSIONS This study provides the most comprehensive description of the epidemiologic, treatment, and survival trends of primary bone tumors of the mobile spine. Second, patient and tumor characteristics associated with improved 5-year survival were identified using a multivariate model.
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Affiliation(s)
- David L Kerr
- Department of Orthopedics Surgery, Duke University Medical Center, Durham, NC, USA
| | - Brian L Dial
- Department of Orthopedics Surgery, Duke University Medical Center, Durham, NC, USA.
| | | | - Anthony A Catanzano
- Department of Orthopedics Surgery, Duke University Medical Center, Durham, NC, USA
| | - Whitney O Lane
- Department of General Surgery, Duke University Medical Center, Durham, NC, USA
| | - Dan G Blazer
- Department of General Surgery, Duke University Medical Center, Durham, NC, USA
| | - Brian E Brigman
- Department of Orthopedics Surgery, Duke University Medical Center, Durham, NC, USA
| | | | - William C Eward
- Department of Orthopedics Surgery, Duke University Medical Center, Durham, NC, USA
| | - Melissa E Erickson
- Department of Orthopedics Surgery, Duke University Medical Center, Durham, NC, USA
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Raza SM, Habib A, Wang WL, Gildey PW, Conley AP, Nader ME, Hanna EY, Su SY, DeMonte F. Surgical Management of Primary Skull Base Osteosarcomas: Impact of Margin Status and Patterns of Relapse. Neurosurgery 2019; 86:E23-E32. [DOI: 10.1093/neuros/nyz360] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 07/02/2019] [Indexed: 02/01/2023] Open
Abstract
Abstract
BACKGROUND
Skull base osteosarcomas are aggressive neoplasms characterized by bony invasion and extracompartmental/extra-osseous soft tissue extension that pose obstacles to achieving complete resection. Management is further complicated by the paucity of data regarding the efficacy of surgery within the treatment paradigm.
OBJECTIVE
To identify the impact of margin status on local progression free survival (PFS) and disease specific survival (DSS).
METHODS
A retrospective review was performed of 36 patients with osteosarcoma who underwent gross total resection with negative margins (R0), or positive margins (R1). Patient demographics, prior treatments, relapse patterns, and survival were collected. Univariate analysis was performed to determine the impact of margin status on the PFS (primary outcome) and DSS (secondary outcome).
RESULTS
R0 resection was achieved in 67%, 25% patients had local recurrence, and 19.4% patients had distant metastasis. In assessing the entire cohort, R0 resections had improved DSS (P = .002) and PFS (P = .04). In chemotherapy-naïve patients, R0 resections also had improved impact on PFS (P = .04) and DSS (P = .027). For radiation-naïve patients, improvements in PFS (P = .026) and DSS (P = .031) were also noted.
CONCLUSION
Skull base osteosarcomas present management challenges in which both local and systemic disease progression is the cause of mortality. Achieving R0 resections significantly improves PFS and DSS in treatment-naïve patients within multimodality treatment paradigms. Salvage surgery may benefit in patients after failing previous radiation and chemotherapy treatments. Further work is needed to determine optimal treatment strategies. These data represent the largest series reported to date.
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Affiliation(s)
- Shaan M Raza
- Department of Neurosurgery, MD Anderson Cancer Center, University of Texas, Houston, Texas
| | - Ahmed Habib
- Department of Neurosurgery, MD Anderson Cancer Center, University of Texas, Houston, Texas
| | - Wei-Lien Wang
- Department of Pathology, MD Anderson Cancer Center, University of Texas, Houston, Texas
| | - Paul W Gildey
- Department of Head and Neck Surgery, MD Anderson Cancer Center, University of Texas, Houston, Texas
| | - Anthony P Conley
- Department of Sarcoma Medical Oncology, MD Anderson Cancer Center, University of Texas, Houston, Texas
| | - Marc-Elie Nader
- Department of Head and Neck Surgery, MD Anderson Cancer Center, University of Texas, Houston, Texas
| | - Ehab Y Hanna
- Department of Head and Neck Surgery, MD Anderson Cancer Center, University of Texas, Houston, Texas
| | - Shirley Y Su
- Department of Head and Neck Surgery, MD Anderson Cancer Center, University of Texas, Houston, Texas
| | - Franco DeMonte
- Department of Neurosurgery, MD Anderson Cancer Center, University of Texas, Houston, Texas
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Pombo B, Cristina Ferreira A, Cardoso P, Oliveira A. Clinical effectiveness of Enneking appropriate versus Enneking inappropriate procedure in patients with primary osteosarcoma of the spine: a systematic review with meta-analysis. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2019; 29:238-247. [PMID: 31410619 DOI: 10.1007/s00586-019-06099-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 06/28/2019] [Accepted: 08/05/2019] [Indexed: 12/23/2022]
Abstract
PURPOSE Primary osteosarcoma of the spine is a rare osseous tumour. En bloc resection, in contrast to intralesional resection, is the only procedure able to provide Enneking appropriate (EA) margins, which has improved local control and survival of patients with primary osteosarcoma of the spine. The objective of this study is to compare the risk of local recurrence, metastases development and survival in patients with primary osteosarcoma of the spine submitted to Enneking appropriate (EA) and Enneking inappropriate (EI) procedures. METHODS A systematic search was performed on EBSCO, PubMed and Web of Science, between 1966 and 2018, to identify studies evaluating patients submitted to resection of primary osteosarcoma of the spine. Two reviewers independently assessed all reports. The outcomes were local recurrence, metastases development and survival at 12, 24 and 60 months. RESULTS Five studies (108 patients) were included for systematic review. These studies support the conclusion that EA procedure has a lower local recurrence rate (RR 0.33, 95% CI 0.17-0.66), a lower metastases development rate (RR 0.39, 95% CI 0.17-0.89) and a higher survival rate at 24 months (RR 1.78, 95% CI 1.24-2.55) and 60 months (RR 1.97, 95% CI 1.14-3.42) of follow-up; however, at 12 months, there is a non-significant difference. CONCLUSIONS EA procedure increases the ratio of remission and survival after 24 months of follow-up. Multidisciplinary oncologic groups should weigh the morbidity of an en bloc resection, knowing that in the first year the probability of survival is the same for EA and EI procedures. These slides can be retrieved under Electronic Supplementary Material.
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Affiliation(s)
- Bruno Pombo
- Orthopaedic Department, Centro Hospitalar Universitário do Porto, Porto, Portugal.
| | | | - Pedro Cardoso
- Orthopaedic Department, Centro Hospitalar Universitário do Porto, Porto, Portugal
- Instituto Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
| | - António Oliveira
- Orthopaedic Department, Centro Hospitalar Universitário do Porto, Porto, Portugal
- Instituto Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
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Moussalem CK, Massaad E, Baassiri W, Akhtar Anwar M, Kobeissy F, Eid A, Darwiche N, Omeis I. Spinal sarcomas and immunity: An undervalued relationship. Semin Cancer Biol 2019; 64:36-50. [PMID: 31254615 DOI: 10.1016/j.semcancer.2019.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 06/11/2019] [Accepted: 06/13/2019] [Indexed: 11/17/2022]
Abstract
Sarcomas, especially spine sarcomas, are rare yet debilitating and are underestimated types of cancer. Treatment options for spine sarcomas are limited to chemotherapy, radiotherapy and surgical intervention. Accumulating evidence suggests a complex course associated with the treatment of spine sarcomas as compared to other soft tissue sarcomas in the extremities since adjuvant therapy adds limited success to the oncological outcome. Likewise, the limitations of surgical interventions imposed by the proximity and high sensitivity of the spinal cord, leads to an increased recurrence and mortality rates associated with spine sarcomas. Finding novel treatment options to spine sarcomas as such is inevitable, necessitating a more thorough understanding of the different mechanisms of the underlying etiologies of these tumors. In this review, we discuss the most recent studies tackling the involvement of the immune system; a key player in the emergence of the different types of spine sarcomas and the promising immune-mediated targeted therapy that can be applied in these kind of rare cancers.
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Affiliation(s)
- Charbel K Moussalem
- Division of Neurosurgery, Department of Surgery, American University of Beirut Medical Center, Lebanon
| | - Elie Massaad
- Faculty of Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Wassim Baassiri
- Division of Neurosurgery, Department of Surgery, American University of Beirut Medical Center, Lebanon
| | - M Akhtar Anwar
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Lebanon
| | - Firas Kobeissy
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Lebanon
| | - Ali Eid
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Lebanon
| | - Nadine Darwiche
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Lebanon
| | - Ibrahim Omeis
- Division of Neurosurgery, Department of Surgery, American University of Beirut Medical Center, Lebanon.
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Liu P, Xiao Q, Zhou B, Dai Z, Kang Y. Prognostic Significance of Programmed Death Ligand 1 Expression and Tumor-Infiltrating Lymphocytes in Axial Osteosarcoma. World Neurosurg 2019; 129:e240-e254. [PMID: 31128313 DOI: 10.1016/j.wneu.2019.05.121] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 01/09/2023]
Abstract
OBJECTIVE To characterize the intratumoral immune microenvironment and evaluate its clinical implications in patients with primary axial osteosarcoma. METHODS Immunohistochemistry was used to interpret tumor programmed death ligand 1 (PD-L1) expression and tumor-infiltrating lymphocytes (TILs) profile of cluster of differentiation 8 (CD8), PD-L1, and programmed death 1 (PD-1) within 69 tumor specimens. RESULTS Overall, all tumor specimens presented lymphocytic infiltrates, with PD-L1+ TILs being the most common subset (mean, 215.1 per slide mm2). Positive tumor PD-L1 expression was presented in 43.5% of tumors. Moderate to strong relationships were detected among TILs subsets and tumor PD-L1 expression. In addition, the density of PD-L1+ TILs was significantly correlated with favorable clinicopathologic features, including earlier Enneking stage. The positivity of tumor PD-L1 expression was associated with the tumor site and pathologic grade (P = 0.021 and 0.037, respectively). In univariate survival analysis, the high density of PD-L1+ TILs or CD8+ TILs was significantly correlated with both prolonged event-free survival and overall survival (OS), whereas the high infiltration of PD-1+ TILs was significantly associated with reduced OS, as was the positive tumor PD-L1 expression. Furthermore, multivariate analysis showed that CD8+ TILs and PD-L1+ TILs remained their significance for both event-free survival (P = 0.012 and 0.004, respectively) and OS (P = 0.033 and 0.002, respectively). However, both PD-1+ TILs and tumor PD-L1 expression failed to reach significance for OS. CONCLUSIONS Our results suggested that the immune microenvironment is of clinically relevant significance in patients with axial osteosarcoma. Specifically, we identified both PD-L1+ TILs and CD8+ TILs as independent favorable prognostic markers.
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Affiliation(s)
- Ping Liu
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha City, China
| | - Qing Xiao
- Department of Pathology, Xiangya Hospital, Central South University, Changsha City, China
| | - Bing Zhou
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha City, China
| | - Zhehao Dai
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha City, China
| | - Yijun Kang
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha City, China.
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Sakuda T, Kubo T, Johan MP, Furuta T, Sakaguchi T, Nakanishi M, Ochi M, Adachi N. Novel Near-Infrared Fluorescence-Guided Surgery With Vesicular Stomatitis Virus for Complete Surgical Resection of Osteosarcomas in Mice. J Orthop Res 2019; 37:1192-1201. [PMID: 30839125 DOI: 10.1002/jor.24277] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 02/20/2019] [Indexed: 02/04/2023]
Abstract
Attempts have been made to visualize tumor cells intraoperatively with fluorescence guidance. However, the clear demarcation and complete tumor resection have always been a challenging task. To address this, we have developed a novel fluorescence bioimaging system with vesicular stomatitis virus (VSV) incorporating Katushka, near-infrared fluorescent protein. VSV is tumor-specific owing to the deficiency of antiviral interferon signaling pathways in tumor cells. We aimed to evaluate the tumor specificity of the recombinant VSV-Katushka (rVSV-K) in osteosarcoma cells and to assess the feasibility of complete tumor resection by the rVSV-K fluorescence guidance. In in vitro experiments, mouse and human osteosarcoma cell lines and normal human mesenchymal stem cells were infected with rVSV-K and observed by fluorescence microscopy. Near-infrared fluorescence was observed only in osteosarcoma cells, even at a low-concentration of virus infections. In in vivo experiments, mouse osteosarcoma (LM8) cells were transplanted subcutaneously into the back of immune-competent mice to produce an osteosarcoma, which was then injected with rVSV-K. The areas emitting fluorescence were resected using a bioimaging system. The distance between the surgical and tumor margins of the fluorescence-guided resection with rVSV-K group was significantly larger than that of the non-guided resection groups. The local recurrence rate was significantly lower in the fluorescence-guided resection with rVSV-K group than in the non-guided resection groups. The distant metastasis rate and average survival rate were not significantly different between all groups. These results suggest that the rVSV-K is specific to osteosarcoma cells and enables complete tumor resection of osteosarcomas in mice. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res.
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Affiliation(s)
- Tomohiko Sakuda
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Tadahiko Kubo
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Muhammad Phetrus Johan
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.,Department of Orthopedic and Traumatology, Faculty of Medicine, Hasanuddin University, Tamalanrea Makassar, Indonesia
| | - Taisuke Furuta
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Takemasa Sakaguchi
- Department of Virology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Minami-ku, Hiroshima, Japan
| | - Mahito Nakanishi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Mitsuo Ochi
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Nobuo Adachi
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
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Howell EP, Williamson T, Karikari I, Abd-El-Barr M, Erickson M, Goodwin ML, Reynolds J, Sciubba DM, Goodwin CR. Total en bloc resection of primary and metastatic spine tumors. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:226. [PMID: 31297391 PMCID: PMC6595209 DOI: 10.21037/atm.2019.01.25] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Primary and metastatic tumors of the spine represent a significant cause of patient morbidity, and present a management challenge to treating providers. From a neurosurgical standpoint, resection surgery may be warranted in cases of spinal instability, progressive disease, neurological compromise, or intractable symptoms. Removal of a tumor "en bloc" offers a more aggressive modality over more conservative resection techniques. En bloc resection entails the removal of the entirety of a tumor without violation of its capsule, and may offer improved rates of local control and overall survival in appropriately selected patients. Conversely, this technique carries a higher complication rate, and requires a unique set of technical skills as compared to more traditional resection. Here, we describe the technical aspects of en bloc resection, as well as specific indications and considerations when employing this operative technique.
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Affiliation(s)
| | - Theresa Williamson
- Department of Neurosurgery, Duke University Medical Center, Durham, NC, USA
| | - Isaac Karikari
- Department of Neurosurgery, Duke University Medical Center, Durham, NC, USA
| | | | - Melissa Erickson
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Matthew L Goodwin
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | | | - Daniel M Sciubba
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - C Rory Goodwin
- Department of Neurosurgery, Duke University Medical Center, Durham, NC, USA
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Goodwin ML, Pennington Z, Westbroek EM, Cottrill E, Ahmed AK, Sciubba DM. Lactate and cancer: a "lactatic" perspective on spinal tumor metabolism (part 1). ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:220. [PMID: 31297385 DOI: 10.21037/atm.2019.02.32] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Spine tumors are among the most difficult tumors to treat given their proximity to the spinal cord. Despite advances in adjuvant therapies, surgery remains a critical component of treatment, both in primary tumors and metastatic disease. Given the significant morbidity of these surgeries and with other current adjuvant therapies (e.g., radiation, chemotherapy), interest has grown in other methods of targeting tumors of the spine. Recent efforts have highlighted the tumor microenvironment, and specifically lactate, as central to tumorigenesis. Once erroneously considered a waste product that indicated hypoxia/hypoperfusion, lactate is now known to be at the center of whole-body metabolism, shuttling between tissues and being used as a fuel. Diffusion-driven transporters and the near-equilibrium enzyme lactate dehydrogenase (LDH) allow rapid mobilization of large stores of muscle glycogen in the form of lactate. In times of stress, catecholamines can bind muscle cell receptors and trigger the breakdown of glycogen to lactate, which can then diffuse out into circulation and be used as a fuel where needed. Hypoxia, in contrast, is rarely the reason for an elevated arterial [lactate]. Tumors were originally described in the 1920's as being "glucose-avid" and "lactate-producing" even in normoxia (the "Warburg effect"). We now know that a broad range of metabolic behaviors likely exist, including cancer cells that consume lactate as a fuel, others that may produce it, and still others that may change their behavior based on the local microenvironment. In this review we will examine the relationship between lactate and tumor metabolism with a brief look at spine-specific tumors. Lactate is a valuable fuel and potent signaling molecule that has now been implicated in multiple steps in tumorigenesis [e.g., driving vascular endothelial growth factor (VEGF) expression in normoxia]. Future work should utilize translational animal models to target tumors by altering the local tumor microenvironment, of which lactate is a critical part.
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Affiliation(s)
- Matthew L Goodwin
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Zach Pennington
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Erick M Westbroek
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Ethan Cottrill
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - A Karim Ahmed
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Daniel M Sciubba
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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Abstract
BACKGROUND Open approaches to the thoracolumbar spine for en bloc vertebral body tumor resection are associated with significant surgical morbidity. Less invasive surgical techniques may reduce complications. OBJECTIVE To present our experience with a staged posterior midline and mini-open anterolateral extracoelomic approach to en bloc corpectomy for vertebral body tumor resection in cadaver specimens and patients. MATERIALS AND METHODS The feasibility and safety of the staged posterior midline and mini-open anterolateral extracoelomic approach were evaluated in 3 cadaveric specimens. The procedure was performed at 3 levels (L1-L3) in each cadaver specimen (9 levels) and then in 1 clinical case. The cadaveric neurovascular structures were evaluated for tissue injury, whereas the operative experience, patient complications, and early surgical and clinical outcomes were reviewed. RESULTS The approach allowed for en bloc corpectomy without any injury to the cadaveric neurovascular structures. The procedure was reproducible in the clinical setting, which showed favorable clinical and radiographic patient outcomes. CONCLUSIONS Early clinical experience suggests the staged posterior midline and mini-open anterolateral extracoelomic approach is feasible and safe for en bloc tumor resection compared with open techniques with related morbidity. Long-term studies are needed to understand the strengths and limitations of this technique.
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Spinal osteosarcoma in the paediatric age group: Case series and literature review. Rev Esp Cir Ortop Traumatol (Engl Ed) 2019. [DOI: 10.1016/j.recote.2018.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Zhang Z, Luo G, Yu C, Yu G, Jiang R, Shi X. MicroRNA-493-5p inhibits proliferation and metastasis of osteosarcoma cells by targeting Kruppel-like factor 5. J Cell Physiol 2019; 234:13525-13533. [PMID: 30773645 DOI: 10.1002/jcp.28030] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 11/27/2018] [Indexed: 01/04/2023]
Abstract
Osteosarcoma, including spinal osteosarcoma, has properties of high degree of malignancy, high rate of recurrence, and high incidence of metastasis. microRNAs can exert oncogenic or tumor suppressive roles in cancer cells. This study explored the effects of microRNA-493-5p (miR-493-5p) on osteosarcoma cell viability, migration, invasion, and apoptosis, as well as the underlying possible mechanism. First, the expression of miR-493-5p in osteosarcoma tissues and cells was detected using quantitative reverse transcription polymerase chain reaction (qRT-PCR). Then, the effects of miR-493-5p overexpression (or suppression) on osteosarcoma cell viability, migration, invasion, and apoptosis, as well as Kruppel-like factor 5 (KLF5) expression, were assessed using the Cell Counting Kit-8 assay, two-chamber transwell assay, Annexin V-FITC/PI apoptosis detection kit, qRT-PCR, and western blotting, respectively. Finally, the roles of KLF5 in miR-493-5p suppression-induced U20S cell viability, migration, and invasion enhancement, as well as the PI3K/AKT pathway activation, were evaluated. We found that miR-493-5p had lower expression in tumor tissues of spinal osteosarcoma and osteosarcoma cells. Overexpression of miR-493-5p inhibited osteosarcoma U20S cell viability, migration, and invasion, but induced cell apoptosis. On the contrary, suppression of miR-493-5p-promoted U20S cell viability, migration, and invasion. KLF5 was a direct target gene of miR-493-5p, which participated in the effects of miR-493-5p on U20S cell viability, migration, invasion, and apoptosis. Furthermore, suppression of the miR-493-5p activated PI3K/AKT pathway in U20S cells by upregulating KLF5. In conclusion, we revealed that miR-493-5p exerted tumor suppressive roles in spinal osteosarcoma and osteosarcoma cells. Overexpression of miR-493-5p inhibited proliferation and metastasis of osteosarcoma cells by downregulating KLF5 and inactivating the PI3K/AKT signaling pathway.
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Affiliation(s)
- Zaiqing Zhang
- Department of Orthopaedics, Linyi Central Hospital, Yishui, China
| | - Gongzeng Luo
- Department of Orthopaedics, Linyi Central Hospital, Yishui, China
| | - Chuandong Yu
- Department of Orthopaedics, Heze Municipal Hospital, Heze, China
| | - Guisheng Yu
- Department of Orthopaedics, Heze Municipal Hospital, Heze, China
| | - Rui Jiang
- Department of Orthopaedics, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xuefeng Shi
- Department of Orthopedics, Trauma & Hand and Foot Surgery, Jinan Central Hospital Affiliated to Shandong University, Jinan, China
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Egea-Gámez RM, Ponz-Lueza V, Cendrero-Torrado A, Martínez-González C, Certucha-Barragán JA, González-Díaz R. Spinal osteosarcoma in the paediatric age group: case series and literature review. Rev Esp Cir Ortop Traumatol (Engl Ed) 2019; 63:122-131. [PMID: 30744956 DOI: 10.1016/j.recot.2018.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 07/28/2018] [Accepted: 09/02/2018] [Indexed: 10/27/2022] Open
Abstract
INTRODUCTION AND OBJECTIVE Osteosarcoma is the most frequent malignant spinal tumour in the paediatric age group. Diagnosis and early treatment of this pathology is essential for a good prognosis. The aim of this study was to present the results of treatment of paediatric patients with lumbar osteosarcoma and conduct a literature review. MATERIAL AND METHODS All the patients with lumbar osteosarcoma who were operated between 2012 and 2014 in the same centre were included. Demographic and radiological data (Enneking, WBB and Tomita classification), as well as anatomopathological (Broders classification) variables were analysed. All the patients were treated by surgical resection associated with adjuvant therapies (chemotherapy and radiotherapy); according to consensus with the tumour committee. The average follow-up was 62.53 months (47-70 months). RESULTS A total of 3 patients were studied, two girls of 9 and 11, with L5 osteosarcoma, and a 15-year-old boy with L4 osteosarcoma. Two of the cases were initially treated as an osteoblastoma, supported by radiological and anatomopathological images. None of the patients had local recurrences or metastases during follow-up. CONCLUSIONS Due to a lack of long series of cases of osteosarcoma in the mobile spine during childhood, the optimal treatment and prognosis in these patients is uncertain. Block resection improves local control of the disease, without demonstrating improvement in overall survival. Intralesional resection is associated with a higher rate of local recurrence. Oncological treatment is essential in the treatment of this pathology. A correct differential diagnosis of the tumour (osteosarcoma vs. osteoblastoma) is vital for its correct treatment.
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Affiliation(s)
- R M Egea-Gámez
- Unidad de Raquis, Servicio de Traumatología y Ortopedia Infantil, Hospital Infantil Universitario Niño Jesús, Madrid, España.
| | - V Ponz-Lueza
- Servicio de Ortopedia y Traumatología, Hospital Universitario Clínico San Carlos, Madrid, España
| | - A Cendrero-Torrado
- Servicio de Ortopedia y Traumatología, Hospital Virgen de las Nieves, Granada, España
| | - C Martínez-González
- Unidad de Raquis, Servicio de Traumatología y Ortopedia Infantil, Hospital Infantil Universitario Niño Jesús, Madrid, España
| | - J A Certucha-Barragán
- Unidad de Raquis, Servicio de Traumatología y Ortopedia Infantil, Hospital Infantil Universitario Niño Jesús, Madrid, España
| | - R González-Díaz
- Unidad de Raquis, Servicio de Traumatología y Ortopedia Infantil, Hospital Infantil Universitario Niño Jesús, Madrid, España
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Biomimetic 3D-printed custom-made prosthesis for anterior column reconstruction in the thoracolumbar spine: a tailored option following en bloc resection for spinal tumors : Preliminary results on a case-series of 13 patients. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2018; 27:3073-3083. [PMID: 30039254 DOI: 10.1007/s00586-018-5708-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 07/18/2018] [Indexed: 10/28/2022]
Abstract
PURPOSE Various techniques for anterior column reconstruction have been described after en bloc resection of spinal tumors. Limited evidence exists regarding one being superior to another. The purpose of this study is to evaluate 3D-printed vertebral bodies for spinal reconstruction after en bloc resection in the thoracolumbar spine. METHODS Prospective observational study on custom-made 3D-printed titanium reconstruction of vertebral bodies after en bloc resection for spinal tumor was conducted between November 2015 and June 2017. 3D-printed vertebral bodies were monitored for mechanical complications such as (1) migration, (2) subsidence into the adjacent vertebral bodies, and/or (3) breakage. Complications and related details were recorded. RESULTS Thirteen patients (7 females and 6 males) were enrolled, and reconstruction of the anterior column was performed using custom-made 3D-printed titanium prosthesis after en bloc resection for spinal tumor (8 primary bone tumors and 5 solitary metastases). Subsidence into the adjacent vertebral bodies occurred in all patients at both proximal and distal bone-implant interfaces; however, it was clinically irrelevant (asymptomatic, and no consequences on posterior instrumentation), in 11 out of 12 patients (92%). In 1 patient (#4), severity of the subsidence led to revision of the construct. At an average 10-month follow-up (range 2-16), 1 implant was removed due to local recurrence of the disease and 1 was revisioned due to progressive distal junctional kyphosis. CONCLUSION Preliminary results from this series suggest that 3D printing can be effectively used to produce custom-made prosthesis for anterior column reconstruction. These slides can be retrieved under Electronic Supplementary Material.
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