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van der Woude R, Fitski M, van der Zee JM, van de Ven CP, Bökkerink GMJ, Wijnen MHWA, Meulstee JW, van Doormaal TPC, Siepel FJ, van der Steeg AFW. Clinical Application and Further Development of Augmented Reality Guidance for the Surgical Localization of Pediatric Chest Wall Tumors. J Pediatr Surg 2024; 59:1549-1555. [PMID: 38472040 DOI: 10.1016/j.jpedsurg.2024.02.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024]
Abstract
BACKGROUND Surgical treatment of pediatric chest wall tumors requires accurate surgical planning and tumor localization to achieve radical resections while sparing as much healthy tissue as possible. Augmented Reality (AR) could facilitate surgical decision making by improving anatomical understanding and intraoperative tumor localization. We present our clinical experience with the use of an AR system for intraoperative tumor localization during chest wall resections. Furthermore, we present the pre-clinical results of a new registration method to improve our conventional AR system. METHODS From January 2021, we used the HoloLens 2 for pre-incisional tumor localization during all chest wall resections inside our center. A patient-specific 3D model was projected onto the patient by use of a five-point registration method based on anatomical landmarks. Furthermore, we developed and pre-clinically tested a surface matching method to allow post-incisional AR guidance by performing registration on the exposed surface of the ribs. RESULTS Successful registration and holographic overlay were achieved in eight patients. The projection seemed most accurate when landmarks were positioned in a non-symmetric configuration in proximity to the tumor. Disagreements between the overlay and expected tumor location were mainly due to user-dependent registration errors. The pre-clinical tests of the surface matching method proved the feasibility of registration on the exposed ribs. CONCLUSIONS Our results prove the applicability of AR guidance for the pre- and post-incisional localization of pediatric chest wall tumors during surgery. The system has the potential to enable intraoperative 3D visualization, hereby facilitating surgical planning and management of chest wall resections. LEVEL OF EVIDENCE IV TYPE OF STUDY: Treatment Study.
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Affiliation(s)
- Rémi van der Woude
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS, Utrecht, the Netherlands; Technical Medicine, TechMed Centre, University of Twente, Drienderlolaan 5, 7522 NB, Enschede, the Netherlands
| | - Matthijs Fitski
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS, Utrecht, the Netherlands
| | - Jasper M van der Zee
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS, Utrecht, the Netherlands; Technical Medicine, TechMed Centre, University of Twente, Drienderlolaan 5, 7522 NB, Enschede, the Netherlands
| | - Cornelis P van de Ven
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS, Utrecht, the Netherlands
| | - Guus M J Bökkerink
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS, Utrecht, the Netherlands
| | - Marc H W A Wijnen
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS, Utrecht, the Netherlands
| | | | - Tristan P C van Doormaal
- Augmedit B.V., Naarden, the Netherlands; Department of Neurosurgery, Brain Division, University Medical Center, Utrecht, the Netherlands
| | - Françoise J Siepel
- Robotics and Mechatronics, TechMed Centre, University of Twente, Drienerlolaan 5, 7522 NB, Enschede, the Netherlands
| | - Alida F W van der Steeg
- Princess Máxima Center for Pediatric Oncology, Heidelberglaan 25, 3584 CS, Utrecht, the Netherlands.
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Schulpen M, Haveman LM, van der Heijden L, Kaal SEJ, Bramer JAM, Fajardo RD, de Haan JJ, Hiemcke-Jiwa LS, Ter Horst SAJ, Jutte PC, Schreuder HWB, Tromp JM, van der Graaf WTA, van de Sande MAJ, Gelderblom H, Merks JHM, Karim-Kos HE. The survival disparity between children and adolescents and young adults (AYAs) with Ewing sarcoma in the Netherlands did not change since the 1990s despite improved survival: A population-based study. Eur J Cancer 2024; 208:114209. [PMID: 39018631 DOI: 10.1016/j.ejca.2024.114209] [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: 05/03/2024] [Revised: 06/28/2024] [Accepted: 07/03/2024] [Indexed: 07/19/2024]
Abstract
BACKGROUND Adolescents and young adults (AYAs) with Ewing sarcoma have a worse prognosis than children. Population-based survival evaluations stratifying findings by important clinical factors are, however, limited. This Dutch population study comprehensively compared survival of children and AYAs with Ewing sarcoma over three decades considering diagnostic period, tissue of origin, tumor site, and disease stage. METHODS Data on all children (0-17 years, N = 463) and AYAs (18-39 years, N = 379) diagnosed with Ewing sarcoma in the Netherlands between 1990-2018 were collected from the Netherlands Cancer Registry with follow-up until February 2023. Five-year relative survival was calculated using the cohort method. Multivariable analyses were conducted through Poisson regression. RESULTS Children with Ewing sarcoma had a significantly higher 5-year relative survival than AYAs (65 % vs. 44 %). An increasing trend in survival was noted reaching 70 % in children and 53 % in AYAs in 2010-2018. Results were similar for Ewing bone sarcoma and extraosseous Ewing sarcoma. AYAs had a poorer prognosis than children for most tumor sites and regardless of disease stage. Survival probabilities were 60 % vs. 78 % for localized disease and 20 % vs. 33 % for metastatic disease. Multivariable-regression analysis, adjusted for follow-up time, diagnostic period, sex, disease stage, and tumor site, confirmed increased excess mortality among AYAs compared with children (excess HR: 1.7, 95 % CI: 1.3-2.1). CONCLUSIONS Despite survival improvements since the 1990s, AYAs with Ewing sarcoma in the Netherlands continue to fare considerably worse than children. This survival disparity was present irrespective of tissue of origin, tumor site, and disease stage.
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Affiliation(s)
- Maya Schulpen
- Princess Máxima Center for pediatric oncology, Utrecht, the Netherlands
| | - Lianne M Haveman
- Princess Máxima Center for pediatric oncology, Utrecht, the Netherlands
| | | | - Suzanne E J Kaal
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Jos A M Bramer
- Princess Máxima Center for pediatric oncology, Utrecht, the Netherlands; Department of Orthopedic Surgery and Sports Medicine, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Raquel Dávila Fajardo
- Princess Máxima Center for pediatric oncology, Utrecht, the Netherlands; Department of Radiation Oncology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Jacco J de Haan
- Department of Medical Oncology, University Medical Center Groningen, Groningen, the Netherlands
| | - Laura S Hiemcke-Jiwa
- Princess Máxima Center for pediatric oncology, Utrecht, the Netherlands; Department of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Simone A J Ter Horst
- Princess Máxima Center for pediatric oncology, Utrecht, the Netherlands; Division of Imaging and Oncology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Paul C Jutte
- Department of Orthopedics, University Medical Center Groningen, Groningen, the Netherlands
| | - Hendrik W B Schreuder
- Princess Máxima Center for pediatric oncology, Utrecht, the Netherlands; Department of Orthopedics, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Jacqueline M Tromp
- Department of Medical Oncology, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Winette T A van der Graaf
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, the Netherlands; Department of Medical Oncology, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Michiel A J van de Sande
- Princess Máxima Center for pediatric oncology, Utrecht, the Netherlands; Department of Orthopedics, Leiden University Medical Center, Leiden, the Netherlands
| | - Hans Gelderblom
- Department of Medical Oncology, Leiden University Medical Center, Leiden, the Netherlands
| | - Johannes H M Merks
- Princess Máxima Center for pediatric oncology, Utrecht, the Netherlands; Division of Imaging and Oncology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Henrike E Karim-Kos
- Princess Máxima Center for pediatric oncology, Utrecht, the Netherlands; Department of Research and Development, Netherlands Comprehensive Cancer Organization (IKNL), Utrecht, the Netherlands.
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Jamshidi K, Karimi A, Babaei Zarch MA, Mirzaei A. Outcomes of proximal humeral reconstruction with cemented osteoarticular allograft in pediatric patients: a retrospective cohort study. J Shoulder Elbow Surg 2023; 32:e608-e615. [PMID: 37315710 DOI: 10.1016/j.jse.2023.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/23/2023] [Accepted: 05/06/2023] [Indexed: 06/16/2023]
Abstract
BACKGROUND There is no agreement on the best choice of proximal humeral reconstruction following tumor resection in pediatric patients. We reviewed the functional outcomes, oncologic outcomes, and surgical complications in pediatric patients after proximal humeral reconstruction with cemented osteoarticular allograft. METHODS Eighteen patients aged 8-13 years who underwent proximal humeral osteoarticular allograft reconstruction following resection of primary bone sarcoma were included. The mean follow-up period was 88 ± 31.7 months. At the last follow-up assessment, limb function was evaluated based on shoulder range of motion, Musculoskeletal Tumor Society score, and Toronto Extremity Salvage Score. Tumor recurrence and postoperative complications were extracted from the patients' medical records. RESULTS Mean active forward flexion of the shoulder was 38° ± 18°. Mean active abduction was 48° ± 18°. Mean active external rotation was 23° ± 9°. The mean Musculoskeletal Tumor Society score was 73.4% ± 11.2%. The mean Toronto Extremity Salvage Score was 75.6% ± 12.9%. Local recurrence occurred in 1 patient. Metastasis developed after the operation in 2 additional patients. We recorded 6 postoperative complications in this series, including 1 superficial infection, 1 late-onset deep infection, 1 allograft fracture, 2 cases of nonunion, and 2 cases of shoulder instability. Two complications required allograft removal. CONCLUSION In pediatric patients, reconstruction of the proximal humerus with cemented osteoarticular allograft results in acceptable oncologic and functional outcomes while the postoperative complication rate seems to be lower than that of other available techniques.
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Affiliation(s)
- Khodamorad Jamshidi
- Department of Orthopedics, School of Medicine, Bone and Joint Reconstruction Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Amin Karimi
- Research Development Unit, Department of Orthopedic Surgery, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Orthopaedic Surgery, UPMC Freddie Fu Sports Medicine Center, Pittsburgh, PA, USA
| | - Mohammad Ali Babaei Zarch
- Research Development Unit, Department of Orthopedic Surgery, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Alireza Mirzaei
- Department of Orthopedics, School of Medicine, Bone and Joint Reconstruction Research Center, Iran University of Medical Sciences, Tehran, Iran.
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Hu X, Fujiwara T, Sun Y, Huang W, Yan W. Does primary tumor resection improve survival for patients with sarcomas of pelvic bones, sacrum, and coccyx who have metastasis at diagnosis ? 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; 32:4362-4376. [PMID: 37870700 DOI: 10.1007/s00586-023-07985-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 09/14/2023] [Accepted: 10/02/2023] [Indexed: 10/24/2023]
Abstract
BACKGROUND Recent studies demonstrated that primary tumor resection (PTR) improves survival of patients with metastatic bone sarcomas. However, it remains quite unclear regarding the role of PTR in the treatment of sarcomas of pelvic bones with synchronous metastasis at diagnosis. METHODS Using the Surveillance, Epidemiology, and End Results Program, we enrolled a total of 385 patients with sarcomas of pelvic bones, sacrum, and coccyx who have metastasis at initial diagnosis, including 139 patients with osteosarcoma, 176 with Ewing sarcoma, and 70 with chondrosarcoma. Association between PTR and disease-specific survival (DSS) were investigated using the univariable and multivariable Cox regression models. Hazard ratio (HR) and 95% confidence interval (CI) were reported. Representative institutional PTR strategies and clinical outcomes for patients with metastatic pelvic sarcomas from our cancer center were displayed. RESULTS The usage rate of PTR was 28.1% (39/139) in osteosarcoma, 13.6% (24/176) in Ewing sarcoma, and 41.4% (29/70) in chondrosarcoma with synchronous metastatic lesions. PTR was not associated with an improved DSS for metastatic pelvic osteosarcoma (HR = 0.686, 95% CI = 0.430 ~ 1.094, P = 0.113) and Ewing sarcoma (HR = 0.580, 95% CI = 0.291 ~ 1.154, P = 0.121). The use of PTR was associated with an improved DSS for metastatic pelvic chondrosarcoma (HR = 0.464, 95% CI = 0.225 ~ 0.954, P = 0.037). CONCLUSION Primary lesion resection may provide a survival benefit for metastatic chondrosarcoma, but not for osteosarcoma and Ewing sarcoma of pelvic bones, sacrum, and coccyx. This population-based study recommends an active surgical intervention for metastatic chondrosarcoma while non-surgical treatment for metastatic osteosarcoma and Ewing sarcoma of the pelvis in terms of survival improvement.
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Affiliation(s)
- Xianglin Hu
- Department of Musculoskeletal Oncology, Spinal Tumor Center, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Tomohiro Fujiwara
- Department of Orthopaedic Surgery, Dentistry, and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, Japan
| | - Yangbai Sun
- Department of Musculoskeletal Oncology, Spinal Tumor Center, Fudan University Shanghai Cancer Center, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Wending Huang
- Department of Musculoskeletal Oncology, Spinal Tumor Center, Fudan University Shanghai Cancer Center, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Wangjun Yan
- Department of Musculoskeletal Oncology, Spinal Tumor Center, Fudan University Shanghai Cancer Center, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
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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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San-Julián M, Gómez-Álvarez J, Idoate MÁ, Aquerreta JD, Vázquez-García B, Lamo-Espinosa JM. Epiphyseal distraction prior to resection in paediatric bone sarcomas : four decades of experience. Bone Joint J 2023; 105-B:11-16. [PMID: 36587257 DOI: 10.1302/0301-620x.105b1.bjj-2022-0722.r2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Paediatric bone sarcomas are a dual challenge for orthopaedic surgeons in terms of tumour resection and reconstruction, as it is important to minimize functional and growth problems without compromising survival rates. Cañadell's technique consists of a Type I epiphysiolysis performed using continuous distraction by an external fixator prior to resection. It was designed to achieve a safe margin due to the ability of the physeal cartilage to be a barrier to tumour spread in some situations, avoiding the need for articular reconstruction, and preserving the growth capacity most of the times. Despite initial doubts raised in the scientific community, this technique is now widely used in many countries for the treatment of metaphyseal paediatric bone sarcomas. This annotation highlights the importance of Cañadell's work and reviews the experience of applying it to bone sarcoma patients over the last 40 years.Cite this article: Bone Joint J 2023;105-B(1):11-16.
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Affiliation(s)
- Mikel San-Julián
- Department of Orthopaedic Surgery, Clinica Universidad de Navarra, Pamplona, Spain
| | - Jorge Gómez-Álvarez
- Department of Orthopaedic Surgery, Clinica Universidad de Navarra, Pamplona, Spain
| | - Miguel Á Idoate
- Department of Pathology, Clinica Universidad de Navarra, Pamplona, Spain
| | - Jesús D Aquerreta
- Department of Radiology, Clinica Universidad de Navarra, Pamplona, Spain
| | | | - José M Lamo-Espinosa
- Department of Orthopaedic Surgery, Clinica Universidad de Navarra, Pamplona, Spain
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Ghandour M, Lehner B, Klotz M, Geisbüsch A, Bollmann J, Renkawitz T, Horsch A. Extraosseous Ewing Sarcoma in Children: A Systematic Review and Meta-Analysis of Clinicodemographic Characteristics. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9121859. [PMID: 36553303 PMCID: PMC9776445 DOI: 10.3390/children9121859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/22/2022] [Accepted: 11/26/2022] [Indexed: 12/04/2022]
Abstract
Background: We conducted this systematic review to provide comprehensive evidence on the prevalence, clinical features and outcomes of young extraosseous Ewing sarcoma (EES) cases. Methods: PubMed, Scopus, Web of Science, and Google Scholar were searched for articles reporting the occurrence of EES among children and adolescents (<21 years). The primary outcome included the rate of occurrence of EES among children and adolescents, while the secondary outcomes included the descriptive analyses of the demographic characteristics, tumor characteristics, and clinical outcomes of the affected cases. The data are reported as the effect size (ES) and its corresponding 95% confidence interval (CI). Results: A total of 29 studies were included. Twenty-four reported instances of childhood disease among all the EES cases [ES = 30%; 95%CI: 29−31%], while five studies reported extraosseous cases among the pediatric EES cases [ES = 22%; 95%CI: 13−31%]. The thorax is the most common location of childhood EES [33%; 95%CI: 20−46%] followed by the extremities [31%; 95%CI: 22−40%]. Concurrent chemotherapy and radiotherapy [57%; 95%CI: 25−84%] was the most commonly implemented management protocol in the pediatric EES cases. The rate of no evidence of disease and 5-year overall survival was 69% for both outcomes. Mortality occurred in 29% of cases, while recurrence and secondary metastasis occurred in 35% and 16% of cases, respectively. Conclusions: Our findings provide insight into the clinical features and outcomes of EES among children and adolescents.
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Affiliation(s)
- Maher Ghandour
- Department of Orthopedics, Heidelberg University Hospital, 69129 Heidelberg, Germany
| | - Burkhard Lehner
- Department of Orthopedics, Heidelberg University Hospital, 69129 Heidelberg, Germany
| | - Matthias Klotz
- Orthopedics and Trauma Surgery, Marienkrankenhaus Soest, 59494 Soest, Germany
| | - Andreas Geisbüsch
- Department of Orthopedics, Heidelberg University Hospital, 69129 Heidelberg, Germany
| | - Jakob Bollmann
- Department of Orthopedics, Heidelberg University Hospital, 69129 Heidelberg, Germany
| | - Tobias Renkawitz
- Department of Orthopedics, Heidelberg University Hospital, 69129 Heidelberg, Germany
| | - Axel Horsch
- Department of Orthopedics, Heidelberg University Hospital, 69129 Heidelberg, Germany
- Correspondence:
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