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Van der Woude HJ, Flipsen M, Welsink C, Van der Zwan AL, Ham SJ. Is total-body MRI useful as a screening tool to rule out malignant progression in patients with multiple osteochondromas? Results in a single-center cohort of 319 adult patients. Skeletal Radiol 2024; 53:141-150. [PMID: 37338590 DOI: 10.1007/s00256-023-04389-2] [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: 01/29/2023] [Revised: 06/11/2023] [Accepted: 06/11/2023] [Indexed: 06/21/2023]
Abstract
PURPOSE To evaluate the results of total-body (TB) MRI used as a screening tool for assessment or exclusion of malignant transformation in patients with hereditary multiple osteochondromas (HMO). PATIENTS AND METHODS In a single-institute cohort of MO patients, 366 TB-MRI examinations, including T1-weighted and STIR images, were performed for screening and follow-up purposes to rule out the malignant transformation, and retrospectively analyzed. In each patient, the presence and location of osteochondromas in the axial and appendicular bones were recorded. Forty-seven patients underwent a second TB surveillance in this period. STIR sequences were used to identify sites of increased signal intensity that could represent suspicious thickened cartilage caps or indeterminate reactive changes related to osteochondromas. RESULTS In 82% of patients, one or more OC locations were determined in one or more flat bones. In 366 exams, nine OC (2,5 %) with suspicious imaging features were identified. These proved to be peripheral chondrosarcomas after targeted MRI and resection were performed. All nine malignant lesions were in flat bones (pelvis 5, ribs 3, scapula 1). Three of these patients were 19 years of age. In 12 patients who had peripheral or intraosseous low-grade chondrosarcoma in their history, before their first TB-MRI, no new lesions were identified. Twenty-three additional TB-MRI exams, demonstrating focal high T2 signal intensity, also gave rise to performing additional targeted MRI. One OC of the distal femur was excised and appeared benign. No suspicious cartilage caps were depicted on the remaining 22 targeted MRI exams but instead increased T2 signal was clarified by reactive changes (frictional bursitis, soft tissue edema) in close relation with benign osteochondromas. No malignant lesions were found in 47 patients who had a second TB surveillance (mean interval between exams 3.2 years, range 2-5 years). CONCLUSION TB-MRI can identify malignant transformation of osteochondromas in HMO patients. All peripheral chondrosarcomas occurred in flat bones (ribs, scapula, pelvis) in our study. TB-MRI might assist in triage between higher risk patients with a high burden of OC, including the location of OC in main flat bones vs lower risk patients without OC of the flat bones.
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Affiliation(s)
- Henk-Jan Van der Woude
- Department of Radiology, Onze Lieve Vrouwe Gasthuis, P.O Box 95500, 1090 HM, Amsterdam, The Netherlands.
| | - Mark Flipsen
- Department of Orthopedic Surgery, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands
| | - Chantal Welsink
- Department of Orthopedic Surgery, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands
| | - Arnard L Van der Zwan
- Department of Orthopedic Surgery, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands
| | - S John Ham
- Department of Orthopedic Surgery, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands
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Ariyaratne S, Jenko N, Iyengar KP, James S, Mehta J, Botchu R. Primary Benign Neoplasms of the Spine. Diagnostics (Basel) 2023; 13:2006. [PMID: 37370901 DOI: 10.3390/diagnostics13122006] [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: 04/25/2023] [Revised: 05/30/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Benign tumours comprise the majority of primary vertebral tumours, and these are often found incidentally on imaging. Nonetheless, accurate diagnosis of these benign lesions is crucial, in order to avoid misdiagnosis as more ominous malignant lesions or infection. Furthermore, some of these tumours, despite their benign nature, can have localised effects on the spine including neural compromise, or can be locally aggressive, thus necessitating active management. Haemangiomas and osteomas (enostosis) are the commonest benign tumours encountered. Others include osteoid osteoma, osteoblastoma, fibrous dysplasia, osteochondroma, chondroblastoma, haemangioma, simple bone cysts, aneurysmal bone cysts, giant cell tumours, eosinophilic granuloma and notochordal rests. The majority of lesions are asymptomatic; however, locally aggressive lesions (such as aneurysmal bone cysts or giant cell tumours) can present with nonspecific symptoms, such as back pain, neurological deficits and spinal instability, which may be indistinguishable from more commonly encountered mechanical back pain or malignant lesions including metastases. Hence, imaging, including radiography, computed tomography (CT) and magnetic resonance imaging (MRI), plays a critical role in diagnosis. Generally, most incidental or asymptomatic regions are conservatively managed or may not require any follow-up, while symptomatic or locally aggressive lesions warrant active interventions, which include surgical resection or percutaneous treatment techniques. Due to advances in interventional radiology techniques in recent years, percutaneous minimally invasive techniques such as radiofrequency ablation, sclerotherapy and cryoablation have played an increasing role in the management of these tumours with favourable outcomes. The different types of primary benign vertebral tumours will be discussed in this article with an emphasis on pertinent imaging features.
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Affiliation(s)
- Sisith Ariyaratne
- Department of Musculoskeletal Radiology, Royal Orthopedic Hospital, Birmingham B31 2AP, UK
| | - Nathan Jenko
- Department of Musculoskeletal Radiology, Royal Orthopedic Hospital, Birmingham B31 2AP, UK
| | - Karthikeyan P Iyengar
- Department of Orthopedics, Southport and Ormskirk Hospital NHS Trust, Southport PR8 6PN, UK
| | - Steven James
- Department of Musculoskeletal Radiology, Royal Orthopedic Hospital, Birmingham B31 2AP, UK
| | - Jwalant Mehta
- Department of Spinal Surgery, Royal Orthopedic Hospital, Birmingham B31 2AP, UK
| | - Rajesh Botchu
- Department of Musculoskeletal Radiology, Royal Orthopedic Hospital, Birmingham B31 2AP, UK
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Farrell ND, Dooley JH, Sheffer BW, Sawyer JR, Kelly DM. Radiation exposure in multiple hereditary exostoses: A retrospective review. J Orthop 2023; 40:87-90. [PMID: 37234093 PMCID: PMC10206377 DOI: 10.1016/j.jor.2023.05.004] [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: 04/03/2023] [Revised: 05/04/2023] [Accepted: 05/05/2023] [Indexed: 05/27/2023] Open
Abstract
Background Exposure to ionizing radiation in patients with Multiple Hereditary Exostoses (MHE) is inevitable and necessary for the diagnosis and treatment of MHE. Radiation exposure has many potentially dangerous consequences, including the increased risk of developing cancer. This is especially concerning in the pediatric patient population since children are more likely to develop adverse effects from radiation than adults. This study aimed to quantify radiation exposure over a five-year period among patients diagnosed with MHE since such information is not currently available in the literature. Methods Diagnostic radiographs, computed tomography (CT) scans, nuclear medicine studies, and intraoperative fluoroscopy exposures were analyzed for radiation exposure in 37 patients diagnosed with MHE between 2015 and 2020. Results Thirty-seven patients with MHE underwent 1200 imaging studies, 976 of which were related to MHE and 224 unrelated to MHE. The mean estimated MHE cumulative radiation dose per patient was 5.23 mSv. Radiographs related to MHE contributed the most radiation. Patients from the ages of 10- to 24-years-old received the most imaging studies and exposure to ionizing radiation, especially compared to those under age 10 (P = 0.016). The 37 patients also received a total of 53 surgical-excision procedures, with a mean of 1.4 procedures per person. Conclusions MHE patients are exposed to increased levels of ionizing radiation secondary to serial diagnostic imaging, with those ages 10-24 years old being exposed to significantly higher doses of radiation. Because pediatric patients are more sensitive to radiation exposure and are at an overall higher risk, the use of radiographs should always be justified in those patients.
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Affiliation(s)
- Nolan D. Farrell
- The University of Tennessee Health Science Center — Campbell Clinic Department of Orthopaedic Surgery and Biomedical Engineering, Memphis, TN, USA
| | - Jennings H. Dooley
- Northwestern University Feinberg School of Medicine, Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Benjamin W. Sheffer
- The University of Tennessee Health Science Center — Campbell Clinic Department of Orthopaedic Surgery and Biomedical Engineering, Memphis, TN, USA
| | - Jeffrey R. Sawyer
- The University of Tennessee Health Science Center — Campbell Clinic Department of Orthopaedic Surgery and Biomedical Engineering, Memphis, TN, USA
| | - Derek M. Kelly
- The University of Tennessee Health Science Center — Campbell Clinic Department of Orthopaedic Surgery and Biomedical Engineering, Memphis, TN, USA
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Assan BR, Simon AL, Violas P, Sales de Gauzy J, Thepaut M, Ould-Slimane M, Pesenti S, Odent T, Glorion C, Pannier S, Ilharreborde B. Surgical outcomes of spinal osteochondroma in children: A multicentre observational study. Orthop Traumatol Surg Res 2022; 108:103239. [PMID: 35150927 DOI: 10.1016/j.otsr.2022.103239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 12/20/2020] [Accepted: 01/13/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Spinal osteochondroma (or exostosis) is a rare benign tumour whose clinical manifestations are delayed due to their slow growth and location. Few studies have addressed the characteristics and the diagnostic and therapeutic peculiarities of spinal osteochondroma in children. The objective of this multicentre observational study was to assess the outcomes of a cohort of children after surgery for spinal osteochondroma. HYPOTHESIS Surgical excision of spinal osteochondroma in children is not followed by complications or recurrences. MATERIAL AND METHODS We included consecutive children who had surgery between 2010 and 2018 at any of eight participating centres to remove spinal osteochondromas. The cause, clinical manifestations, and location of the lesions were collected. The surgical outcomes were evaluated after at least 2 years' follow-up. RESULTS We identified 22 patients who had surgery to remove 26 spinal osteochondromas at a mean age of 12.8±2.6 years. Among them, 7 had a solitary osteochondroma (SO group) and 15 had hereditary multiple osteochondromas (HMO group). At diagnosis, 72% of patients had clinical signs (spinal pain, n=4; one or more lumps, n=5; and neurological manifestations, n=3). In the HMO group, the diagnosis was made during routine MRI screening for tumours involving the spinal canal. Most osteochondromas involved the cervical spine (n=13), with no difference between the two groups (p=0.9). The lamina was the most common location but 54% of the tumours were growing within the canal (92% in the HMO group). After a mean follow-up of 5.2±4.4 years, no patients had experienced any recurrences or complications related to the disease or treatment. DISCUSSION Surgical excision of spinal osteochondromas in children is effective, with no medium-term recurrences. Our results also confirm the low peri-operative morbidity, even when the canal is involved, and the absence of any effect at last follow-up on spinal alignment. All patients with neurological manifestations at diagnosis made a full recovery. LEVEL OF EVIDENCE IV, retrospective observational cohort study.
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Affiliation(s)
- Beaudelaire R Assan
- Service de chirurgie infantile à orientation orthopédique, Hôpital Universitaire Robert Debré, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, 48, Bd Sérurier, 75019 Paris, France
| | - Anne-Laure Simon
- Service de chirurgie infantile à orientation orthopédique, Hôpital Universitaire Robert Debré, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, 48, Bd Sérurier, 75019 Paris, France.
| | - Philippe Violas
- Service de chirurgie pédiatrique, Hôpital Universitaire de Rennes, Hôpital Sud, 16, Bd Bulgarie, 35203 Rennes Cedex 2, France
| | - Jérôme Sales de Gauzy
- Service de pédiatrie-chirurgie orthopédique, traumatologique et plastique, Hôpital Universitaire de Toulouse, Hôpital des enfants, 330, Ave de Grande Bretagne, 31059 Toulouse Cedex 9, France
| | - Matthias Thepaut
- Service de chirurgie pédiatrique, Centre Hospitalier Régional Universitaire de Brest, Hôpital Morvan, 2, Av. Foch, 29200 Brest, France
| | - Mourad Ould-Slimane
- Service de chirurgie orthopédique, Hôpital Universitaire de Rouen, Hôpital Charles Nicolle, 37, Bd Gambetta, 76000 Rouen, France
| | - Sébastien Pesenti
- Service d'Orthopédie Infantile, Hôpital Universitaire de La Timone Enfants, Assistance-Publique des Hôpitaux de Marseille (AP-HM), 264, Rue Saint Pierre, 13005 Marseille, France
| | - Thierry Odent
- Service de chirurgie orthopédique et traumatologique pédiatrique, Hôpital Universitaire Régional de Tours, Hôpital Clocheville, 49, Bd Béranger, 37044 Tours, France
| | - Christophe Glorion
- Service de chirurgie orthopédique et traumatologique pédiatrique, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, 149, Rue de Sèvres, 75015 Paris, France
| | - Stéphanie Pannier
- Service de chirurgie orthopédique et traumatologique pédiatrique, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, 149, Rue de Sèvres, 75015 Paris, France
| | - Brice Ilharreborde
- Service de chirurgie infantile à orientation orthopédique, Hôpital Universitaire Robert Debré, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, 48, Bd Sérurier, 75019 Paris, France
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Doan M, Tschopp B, Binet A, Joseph JM, Bourgeois AB. Costal exostosis at risk of hepatic injury in a 10-year-old girl. JOURNAL OF PEDIATRIC SURGERY CASE REPORTS 2022. [DOI: 10.1016/j.epsc.2022.102291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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An update on the imaging of diaphyseal aclasis. Skeletal Radiol 2021; 50:1941-1962. [PMID: 33791832 DOI: 10.1007/s00256-021-03770-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/23/2021] [Accepted: 03/23/2021] [Indexed: 02/02/2023]
Abstract
Solitary osteochondromas are common, benign hyaline cartilage-capped exostoses that primarily arise from the metaphyses of long and flat bones. Diaphyseal aclasis is an autosomal dominant condition resulting from EXT1 or EXT2 gene mutations and is characterized by multifocal osteochondromas. These can result in a wide spectrum of complications, such as skeletal deformity, neurological and vascular complications, adventitial bursa formation, fracture, and rarely malignant transformation to peripheral chondrosarcoma. In this review, we outline in detail the multimodality imaging features of DA and its associated complications.
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Wininger AE, Chhabra BN, Haigler RE, Hanson DS, Scott AC. The Incidence of Vertebral Exostoses in Multiple Hereditary Exostoses and Recommendations for Spinal Screening. J Pediatr Orthop 2021; 41:e226-e231. [PMID: 33417389 DOI: 10.1097/bpo.0000000000001749] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Multiple hereditary exostoses (MHE) lead to the development of pedunculated or sessile osteocartilaginous lesions. Vertebral involvement occurs in MHE and encroaching intracanal exostoses can result in devastating consequences. Magnetic resonance imaging (MRI) of the entire spine has been used to screen for vertebral exostoses to detect high-risk patients. The primary purpose of this investigation is to determine the incidence of vertebral and encroaching intracanal exostoses in patients with MHE. A secondary purpose is to determine if pelvis and rib exostoses serve as "harbinger" lesions of vertebral involvement in MHE. METHODS A retrospective chart review was performed on 39 patients (21 male and 18 female individuals) with MHE who underwent routine spinal screening with noncontrast entire spine MRI. The average age at screening was 12.3 years (range, 3 to 17 y). Screening was ordered consecutively on patients seen during the study period who were between ages 8 and 18 years or had complaints that could be related to encroaching intracanal exostoses. RESULTS The incidence of vertebral exostoses in this cohort of 39 patients with MHE was 28% (11 total). An encroaching intracanal exostosis was seen in 3 patients (2 cervical, 1 thoracic). Nonencroaching vertebral exostoses were discovered in 8 patients. Sufficient pelvis and rib imaging to determine the presence of pelvis and rib exostoses was available in 8 of those with vertebral exostoses and 19 of those with no vertebral exostoses on screening MRI. In this cohort, the sensitivity and specificity of the presence of both pelvis and rib exostoses for determining the presence of spinal involvement in MHE are 88% and 5%, respectively. CONCLUSIONS Based on the results of this cohort, vertebral exostoses are common in MHE, and screening MRI of the entire spine can be used to determine which patients need close observation. If a more selective screening protocol is utilized, an entire spine MRI could be obtained for patients who desire increased physical activity levels or for patients with both pelvis and rib exostoses. At a minimum, treating physicians should monitor patients with MHE closely for neurological symptoms and have a low threshold to obtain advanced spinal imaging. LEVEL OF EVIDENCE Level III-diagnostic.
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Williams AK, Crawford B, Federman NC, Bernthal N, Arkader A. What's New in Pediatric Orthopaedic Tumor Surgery. J Pediatr Orthop 2021; 41:e174-e180. [PMID: 33027233 DOI: 10.1097/bpo.0000000000001689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Pediatric Orthopaedic Oncology is a developing subspecialty within the field of Pediatric Orthopaedics. Traditionally, the field of Orthopaedic Oncology has been focused on the skeletally mature individual, and the research tends to be all encompassing rather than truly evaluating isolated populations. The purpose of this review is to summarize the most clinically relevant literature in the field of Pediatric Orthopaedic Oncology over the last 6 years. METHODS We evaluated the PubMed database utilizing keywords for pediatric orthopaedic oncology: sarcoma, osteosarcoma, Ewing sarcoma, bone cyst. In additionally, we further broadened our search by searching for relevant articles in the contents sections of major orthopaedic surgery journals that routinely publish both pediatric and orthopaedic oncology literature. In keeping with "What's New," we selected the most clinically relevant articles published in the last 6 years from January 1, 2014 through February 2020. Basic science and systemic therapies literature was widely reviewed and the research and clinical trials most relevant to pediatric sarcoma and neoplastic processes found in the pediatric population were included. RESULTS Our search yielded 60 articles that met general criteria, from which 14 were determined to be most relevant to the goals of this paper. Of the papers presented in this review, there were papers related to management of benign tumors/tumor-like conditions, bone cysts, limb salvage procedures, and amputation procedures. Ultimately included in the review were 5 studies related to limb salvage, 4 related to bone cysts, 1 related to multiple hereditary exostoses, 2 related to osteofibrous dysplasia, 1 related to chondroblastoma, and 1 discussing cementation in skeletally immature patients. They were level III, IV, and V studies. Basic science and systemic therapies literature was widely reviewed and the research and clinical trials most relevant to pediatric sarcoma and neoplastic processes found in the pediatric population were included. Our search of the basic science and systemic therapies literature yielded 19 sources were found to be pertinent to our aims and 18 of those sources were published between 2015 and 2020. CONCLUSIONS There are many, varied, and creative procedures in the realm of limb salvage, though there remains a lack of high-level evidence to support some of the more novel procedures. In regards to benign bone tumors, despite a more solid base of literature, there still does not seem to be consensus as to the best treatment. In particular, there continue to be many schools of thought on the treatment of benign bone cysts. Research in the basic science arena and systemic therapies are advancing in exciting ways in regards to pediatric sarcoma. Orthopaedic oncologic research specific to the pediatric population overall continues to be impeded by low sample sizes and inadequate levels of evidence, which limits the ability of surgeons to draw definitive conclusions from the literature.
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Affiliation(s)
- Amy K Williams
- Department of Orthopaedic Surgery, Miller Children's Hospital, Long Beach
| | | | - Noah C Federman
- Pediatric Hematology and Oncology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | | | - Alexandre Arkader
- Department of Orthopaedic Surgery, Children's Hospital of Philadelphia, Philadephia, PA
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Chilvers R, Gallagher JA, Jeffery N, Bond AP. An unusual example of hereditary multiple exostoses: a case report and review of the literature. BMC Musculoskelet Disord 2021; 22:96. [PMID: 33478453 PMCID: PMC7818741 DOI: 10.1186/s12891-021-03967-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 01/11/2021] [Indexed: 12/13/2022] Open
Abstract
Background Hereditary multiple exostoses (HME) is a rare skeletal disorder characterised by a widespread. distribution of osteochondromas originating from the metaphyses of long bones. Case presentation This case study examines a 55-year-old male cadaver bequeathed to the University of Liverpool who suffered from HME, thus providing an exceptionally rare opportunity to examine the anatomical changes associated with this condition. Conclusions Findings from imaging and dissection indicated that this was a severe case of HME in terms of the quantity and distribution of the osteochondromas and the number of synostoses present. In addition, the existence of enchondromas and the appearance of gaps within the trabeculae of affected bones make this a remarkable case. This study provides a comprehensive overview of the morbidity of the disease as well as adding to the growing evidence that diseases concerning benign cartilaginous tumours may be part of a spectrum rather than distinct entities.
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Affiliation(s)
- Rebecca Chilvers
- Human Anatomy Resource Centre, University of Liverpool, Sherrington Building, Ashton Street, Liverpool, L69 3GE, UK
| | - James A Gallagher
- Department of Musculoskeletal and Ageing Science, Institute of Life Course & Medical Sciences, University of Liverpool, Liverpool, UK
| | - Nathan Jeffery
- Human Anatomy Resource Centre, University of Liverpool, Sherrington Building, Ashton Street, Liverpool, L69 3GE, UK.,Department of Musculoskeletal and Ageing Science, Institute of Life Course & Medical Sciences, University of Liverpool, Liverpool, UK
| | - Alistair P Bond
- Human Anatomy Resource Centre, University of Liverpool, Sherrington Building, Ashton Street, Liverpool, L69 3GE, UK.
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Prospective spine at risk program for prevalence of intracanal spine lesions in pediatric hereditary multiple osteochondromas. Spine Deform 2020; 8:1069-1074. [PMID: 32367382 DOI: 10.1007/s43390-020-00130-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 04/20/2020] [Indexed: 12/14/2022]
Abstract
STUDY DESIGN Retrospective cohort study OBJECTIVES: To determine prevalence of hereditary multiple osteochondromas (HMO) and utility of MRI surveillance in a prospective Spine at Risk (SAR) program. Unidentified intraspinal exostoses in HMO can lead to neurologic injury in children during sedated procedures but no MRI guidelines exist. We sought to determine the prevalence and age of intraspinal exostoses from MRIs, and indications for MRI surveillance. METHODS Retrospective review was performed of pediatric HMO patients who underwent total spine MRIs at a single institution after a prospective SAR program was instituted. Charts were reviewed for MRI indication and findings, symptoms, surgery, and location of other exostoses. Fisher's exact test was used to compare categorical variables and T test to compare continuous variables. Predictive value of pelvic/rib exostoses was calculated for intraspinal lesions. RESULTS Forty-three patients with HMO underwent total spine MRIs with average age of 11.5 years. Fifteen (35%) patients had exostoses on vertebral column, eight (19%) had intra-canal spinal exostoses. Higher prevalence of spine lesions occurred in symptomatic patients than asymptomatic (any spinal lesion: 73% prevalence in symptomatic vs 22% in asymptomatic, p < 0.005; intra-canal spinal lesion: 46% vs 9%, p < 0.05). Only two of the 11 'symptomatic presentations' could be attributable to intracanal spinal exostoses. Only one intra-canal exostosis found on asymptomatic surveillance was treated surgically. Presence of pelvic or rib exostoses were not strongly predictive of intra-canal lesions (23% PPV, 85% NPV, 63% sensitivity, 51% specificity). CONCLUSIONS Even with the presence of intra-canal exostoses, true symptomatic lesions are rare. Rib and pelvic lesions were not predictive of intra-canal lesions in our population. We recommend obtaining MRIs at time of preoperative evaluation in asymptomatic children old enough to not need sedation, or in patients with true neurologic symptoms to prevent unnecessary sedation of younger children for surveillance MRI. LEVEL OF EVIDENCE III.
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11
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Montgomery BK, Cahan EM, Frick S. Spinal Screening MRI Trends in Patients with Multiple Hereditary Exostoses: National Survey. Cureus 2019; 11:e6452. [PMID: 32010535 PMCID: PMC6975245 DOI: 10.7759/cureus.6452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background Multiple hereditary exostoses (MHE) is a rare disease characterized by multiple osteochondromas. Osteochondromas growing into the spinal canal can produce devastating consequences, including permanent neurologic deficits and even death. Routine screening of the entire spinal canal with magnetic resonance imaging (MRI) is a controversial topic lacking a clear consensus or recommendation to guide decision-making. This study presents a case of an intracanal osteochondroma at C1 identified by routine screening and a survey describing current practices of MHE experts. Methods MHE experts were surveyed. Survey questions addressed multiple aspects of care, including the type of practice center, the volume of patients with MHE, and current screening practices. Results A total of 104 experts were contacted, with a total of 26 experts participating in the survey and 23 completing the entire survey. Seventy-two percent of respondents do not perform a routine MRI screen of the spine. For experts that routinely screen, screening is performed across a wide/variable age range (4-18 years). Conclusion Screening protocols for MHE patients to identify osteochondromas within the spinal canal has struggled to reach consensus due to the rarity of the disease. Recent literature provides conflicting advice for patients without neurological symptoms. Our study demonstrates that even experts who are leading the field demonstrate wide practice variability. Most respondents do not routinely perform screening spinal MRI. Due to the wide variability, a national guideline is needed to help guide physician and parental decision-making for patients with MHE. Our case illustrates the potential benefit of identifying an osteochondroma within the spinal canal at a location where further growth could have devastating neurological sequelae.
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Affiliation(s)
| | - Eli M Cahan
- Orthopaedic Surgery, Stanford University, Palo Alto, USA
| | - Steve Frick
- Orthopaedics, Stanford University, Palo Alto, USA
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Abstract
Although individual pediatric hand problems are rare, the combined burden of congenital anomalies, neuromuscular disease, and trauma is considerable in low-resource environments where treatment is unavailable. Surgeons from high-income countries respond to the need for care with short-term trips to low-resource environments to operate and teach local surgeons. Hand problems are amenable to this model, because they may be disabling and treatable with low-risk, low-resource surgery. Pediatric hand problems are especially compelling, because growth may adversely affect outcomes, and resulting disability is lifelong. This article addresses considerations for treating children's hands in low-resource environments, and approaches to specific conditions.
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Gigi R, Kurian BT, Cole A, Fernandes JA. Late presentation of spinal cord compression in hereditary multiple exostosis: case reports and review of the literature. J Child Orthop 2019; 13:463-470. [PMID: 31695813 PMCID: PMC6808079 DOI: 10.1302/1863-2548.13.180130] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
INTRODUCTION Osteochondromas are usually found in the long bones of patients with hereditary multiple exostoses (HME). The spine is reported to be involved in over 50% of cases, but few of these patients are symptomatic as the result of an existing spinal exostosis. METHODS We reviewed the current literature in order to find the right approach to patients with HME-complicated spinal exostosis and describe three paediatric patients that were diagnosed late with spinal cord compression due to cervical exostosis. RESULTS Our three cases were all late presentations with neurology and unfortunately had minimal improvement of neurology after the lesion was surgically removed. There is general agreement that late presentation of spinal cord injury due to osteochondromas involving the cervical spine may cause severe and irreversible neurological sequelae. Our literature review revealed that there are no clear-cut guidelines to develop more comprehensive screening measures for these patients. CONCLUSIONS A high index of suspicion is the most important factor for correct diagnosis and appropriate management. Physicians who treat HME should bear in mind that thorough history taking and a neurological examination at follow up are essential for these patients. Clearer guidelines for the development of more comprehensive screening programmes are essential. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- R. Gigi
- Pediatric Orthopaedic Department, Dana Dwek Children’s Hospital, Tel Aviv Sourasky Medical Center, Tel-Aviv, Israel
| | - B. T. Kurian
- Paediatric Limb Reconstruction Service, Department of Pediatric Orthopedic Surgery, Sheffield Children’s NHS Foundation Trust, Sheffield, UK
| | - A. Cole
- Paediatric Limb Reconstruction Service, Department of Pediatric Orthopedic Surgery, Sheffield Children’s NHS Foundation Trust, Sheffield, UK
| | - J. A. Fernandes
- Paediatric Limb Reconstruction Service, Department of Pediatric Orthopedic Surgery, Sheffield Children’s NHS Foundation Trust, Sheffield, UK,Correspondence should be sent to J. A. Fernandes, Paediatric Limb Reconstruction Service, Department of Pediatric Orthopedic Surgery, Sheffield Children’s NHS Foundation Trust, Sheffield, S10 2TH, UK. E-mail:
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