Unable to process the form. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (, Repair of old total perineal rupture: a case series, Operative challenges of intramedullary nailing for subtrochanteric blastic pathological femur fracture: a case report, A rare case of left parapharyngeal space large schwannoma of unknown origin, Stricturing ileocaecal endometriosis: a rare concurrent aetiology in a patient with Crohns disease, Emphysematous cholecystitis in a patient with porcelain gallbladder, Volume 2023, Issue 1, January 2023 (In Progress), https://creativecommons.org/licenses/by-nc/4.0/, Receive exclusive offers and updates from Oxford Academic, Complete cyst obliteration and no recurrence. Lichtenstein L. Aneurysmal bone cyst: A pathologic entity commonly mistaken for giant cell tumour and occasionally for hemangioma and osteogenic sarcoma. A case report, Solitary bone cyst of a lumbar vertebra. The diagnosis of this lesion is possible by a combination of typical radiological and pathological features. (2009) ISBN:0323053750. Both of our patients were confirmed by pathology report and had a good prognosis and no recurrence in long-term follow-up (10 and 7 years). Computerized tomography scanning revealed a lytic lesion with sclerotic margins involving the left vertebral body, pedicle, lateral mass, and lamina of C-7 with an associated pathological compression fracture. Providers Overview Location Reviews Providers AJR Am J Roentgenol. A case of a simple bone cyst in the spinous process of the fourth cervical vertebra in a 26-year-old woman is reported. There is a minimally expansile lesion of the spinous process of C4 vertebra (arrow). There have been 21 cases of SBCs in English literature, and only 8 cases have been reported in the vertebral body. Spine J. Management of SBC of the spine is not well described. (2000) ISBN: 9780781725286 -, 4. They shared a spinal cord and had the presence of an open spinal defect type meningocele . Unicameral bone cyst. Most patients are between 20 and 40 years old. It may be asymptomatic, and hence the incidence is unknown. The patient had no recurrence in 10-year follow up. The terms 'giant cell reparative granuloma of small bone'2,3 or 'giant cell lesion of small bone' have been discouraged 1. Active unicameral bone cysts occur most frequently between the ages of 1 and 10 years. show answer. Primary bone tumors. Aneurysmal bone cysts display cytogenetic rearrangements of the USP6 gene. Uncommon Manifestations of Intervertebral Disk Pathologic Conditions. Epidemiology The vast majority of discal cysts, as rare as they are, have been reported in males (M:F 9:1), typically of Asian ethnicity 1,2. Diagnostic criteria according to the WHO classification of soft tissue and bone tumors (5th edition)1: a multicystic bone lesion with fluid-fluid levels on imaging, histological evidence that cyst walls are composed of fibroblasts, osteoclastic giant cells, and hemosiderin pigment as well as proof of new bone formation. The spinal column is not a common site for SBC [4]. ABC accounts for the 'A' in the popular mnemonic for lucent bone lesions FEGNOMASHIC. 2005;23(27):6756-62. This rare pathognomic radiologic finding is known as fallen fragment sign (12). Lesions coming from the cervico-brachial plexus are expected to be found in more paraspinal locations. On CT aneurysmal bone cysts are characterized as lucent bone lesions with a mean density higher than fat 7. show answer. CT guided aspiration has been reported 1. (2006) European Spine Journal. Tomoyuki K, Susa M, Nakayama R et al. show answer. . Simple bone cysts are found in the metaphysis of long tubular bones in 9095% of cases, and 565% of such cysts involve the proximal humerus; 2530%, the femur; and the rest, the proximal tibia, fibula, radius, ulna, ileum, patella, rib (8), and calcaneus (9). Cerebellar tonsillar ectopia, or downward herniation of the cerebellar tonsils, is defined as caudal (away from) herniation of the cerebellar tonsils through the foramen magnum. 10. histological evidence that cyst walls are composed of fibroblasts, osteoclastic giant cells, and hemosiderin pigment as well as proof of new bone formation . 70% of patients have neurologic deficit. Dogs . Unicameral bone cysts (UBC),also known as simple bone cysts (SBC) are common benign non-neoplastic lucent bony lesions that are seen mainly in childhood and typically remain asymptomatic. the six stages of vertebral development include: (1) gastrulation and formation of the somitic mesoderm and notochord, (2) condensation of the somitic mesoderm into somites, (3) formation of dermomyotomes and sclerotomes, (4) formation of membranous somites and re-segmentation with definitive vertebral formation, (5) vertebral chondrification and Modic et al. 15 (3): 333. especially posterior elements of the spine with extension into the vertebral body in 40% of cases 5. obturator foramen in . Q: What are the histopathologic characteristics of aneurysmal bone cysts? [ 5, 6] Radiographs usually are adequate for diagnosis and for characterizing typical lesions. Hudson T. Fluid Levels in Aneurysmal Bone Cysts: A CT Feature. MRI is the best imaging choice to distinguish these tumors and surrounding structures. 17. Q: Which are the WHO diagnostic criteria for aneurysmal bone cysts? show answer. Spinal Cyst Treatment Conservative treatment may include rest, anti-inflammatory medications, painkillers, steroid injections and drainage. A single vertebral surgical approach for spinal extradural meningeal cysts spanning multiple vertebral segments by auxiliary neuroendoscope. Notice that many benign osteolytic lesions that are . Welcome, VIN Public! Radiographs demonstrate a sharply defined, expansile solitary lucent bone lesion, with thin-walled cavities 3. Percutaneous treatment with fibrosing agents has also been performed, either in isolation or as a precursor to surgical excision 3,11,12. Compared to the other lesions in this list, aneurysmal bone cysts are markedly expansile (hence, "aneurysmal") and have a thin cortical shell. The etiology of these discal cysts remains uncertain, but they are believed to occur due to traumatic disruption of the annulus with subsequent accumulation of fluid, which forms a surrounding pseudocapsule 1,2. Although Bloodgood first recognized simple bone cysts as a distinct disease entity in 1910, Jaffe and Lichtenstein (1) were the first to provide a detailed description of the simple vertebral bone cyst in 1942. Corticosteroid injection had been described for lesion in the peripheral skeleton can be considered when the risk of fracture is low [30, 23]. {"url":"/signup-modal-props.json?lang=us\u0026email="}, Gaillard F, Hacking C, El-Feky M, et al. Moreover, our patient was 26 years old, well above the usual age for lesions in the long bones (7). There is vivid enhancement of the mass. Microscopic examination revealed mature fat cells, muscle fibers, and connective tissue fragments of the tendons that showed chondroid metaplastic foci (Fig 6A). This paper describes a fourth case of vertebral sarcoidosis and emphasizes the radiographic features of the disease. Top 3 Differentials in Radiology, A Case Review. The vertebral body and vertebral vessels are not involved. Curtis A. Dickman, Michael Fehlings, Ziya L. Gokaslan. MRI of Bone and Soft Tissue Tumors and Tumorlike Lesions. It should be stated that if any sign of malignant lesion was encountered, the surgery would have stopped and only biopsy would have been performed. In conclusion, this study presents two cases of SBCs and reviews the literature. 5). The vertebral endplate: disc degeneration, disc regeneration. Vertebral pneumatocyst. There are multiple internal septations with enhancement and fluid-fluid levels. The stroma corresponds to septations with fibroblasts, spindle cells, osteoids, and numerous benign giant cells. CT proved to be more useful in the initial assessment and measurement of progress of this disease than conventional radiography and myelography. On rare occasions, this is the result of a pathologic fracture. The post-operative recovery was uneventful, but the child wore a plaster collar for three months. 2004;232(2):522-6. Vertebral body endplatesare anatomically-discrete structures that form the interface between the vertebral bodies and the adjacent intervertebral discs. solitary lucent bone lesion, high T1 or low T1 bone lesion, location within the bone (eccentric, central). Aegerter and Kirkpatrick (11) proposed that the cause of the simple bone cysts is post-traumatic and posthemorrhagic, except the ones in the long bones. Herrero, Carlos Fernando P. S., Garcia, Sergio Britto, Garcia, Luis Vicente, Aparecido Defino, Helton Luiz. On follow up, these lesions can change into fluid-filled cavities and eventually become granulation tissue 2. As bone growth progresses the cyst loses its connection to the physis migrating into the diaphysis and subsequently healing. The patient underwent surgery and excisional biopsy through the posterior approach. Differential Diagnosis in Orthopaedic Oncology. They have been traditionally treated operatively with intralesional curettage or excision or complete en bloc excision with bone grafting are options 3. Simple or solitary bone cysts (SBC) also known as unicameral bone cysts are benign lesions commonly seen in the peripheral skeleton [1]. Lippincott Williams & Wilkins. {"url":"/signup-modal-props.json?lang=us\u0026email="}, Niknejad M, Knipe H, Glick Y, et al. Simple bone cyst (SBC) is not a common lesion in the spine and especially in the vertebral body. A: The association of radiological and histological findings makes the diagnosis of aneurysmal bone cysts. (2008) ISBN: 9783131354211 -, 16. Note the lack of blood degradation products. Those cysts predominantly occur in male patients with a ratio of 2.5:1. Simple Bone Cyst in Spinous Process of the C4 Vertebra. Radiographs and nonenhanced CT images show lytic lesions producing cortical thinning and expansion with a destructive sacral or vertebral mass. Meningiomas and hemangiomas usually reveal a solid and rather homogeneous post . Computed tomography (CT) showed a multi-lobulated osteolytic lesion within the T12 body with extension to the right pedicle and transverse process (Fig. Simple bone cysts usually lead to fracture of the bone; therefore, some of these fractures may cause the migration of a fractured bone tissue into the cystic cavity. The synovial cyst is a lesion that can be treated by z-joint intra-articular injections as an alternative to surgery. Causes of Subchondral Bone Cysts. SBCs were found in cervical (n=10, 47.6%), lumbar (n=10, 47.6%) and thoracic (n=1, 4.8%) regions. Steven P. Meyers. Radiographic evaluation of vertebral body lesions has three goals: (1) to identify lesions, (2) characterize lesions and generate a differential diagnosis, and (3) assess for associated complications (in particular cord compression) and treatment response. The vertebra is divided anatomically into the vertebral body anteriorly and the neural arch posteriorly. At present, there is no gold standard for treatment for SBCs and Surgery may not be the optimal treatment for patients except for large lesions or pathologic fracture [21]. We present a simple bone cyst involving the C4 vertebra of a 26-year-old female patient. Aneurysmal bone cysts commonly present with pain and swelling. Aneurysmal bone cysts do not express H3.3pGly34Trp, a feature that can be used to differentiate them from giant cell tumors of bone with aneurysmal bone cyst-like changes 1. Although now generally considered as part of the vertebral body, historically they had been grouped with the intervertebral disc 3. Body and right pedicle and transverse process, Copyright 2023 Oxford University Press and JSCR Publishing Ltd. Vertebral endplate changes were redefined with the advent of MRI, which enabled visualization of previously unrecognized alterations in marrow signal. They are common in patients younger than 30 years, with a slight female predominance. An aneurysmal bone cyst is an expansile osteolytic lesion with a thin wall, containing blood-filled cystic cavities. Reference article, Radiopaedia.org (Accessed on 18 Jan 2023) https://doi.org/10.53347/rID-7189, {"containerId":"expandableQuestionsContainer","displayRelatedArticles":true,"displayNextQuestion":true,"displaySkipQuestion":true,"articleId":7189,"questionManager":null,"mcqUrl":"https://radiopaedia.org/articles/unicameral-bone-cyst-1/questions/2234?lang=us"}. Winter, Raymond T. Morrissy et al. Local recurrence rates are ~15% (range 10-20%) 10. Although there is an overlap in appearances, characteristic imaging features can aid in the distinction between these 2 types of compression fractures. WHO Classification of Tumours, 5th Edition. This is referred to as the doughnut signwhich results in increased uptake peripherally and a photopenic center. St. Louis: Mosby; Patterns of Intrathecal Ossification in Arachnoiditis Ossificans: A Retrospective Case Series, Spinal Cord Sarcoidosis Occurring at Sites of Spondylotic Stenosis, Mimicking Spondylotic Myelopathy: A Case Series and Review of the Literature, The Dominant Anterior Thoracic Artery of the Spinal Cord, Thanks to our 2022 Distinguished Reviewers, Copyright American Society of Neuroradiology. Unicameral bone cysts are well defined geographic lucent lesionswith a narrow zone of transition,mostly seen in skeletally immature patients, which are centrally located and show a thin sclerotic margin in the majority of cases with no periosteal reactionor soft tissue component. Patients age, history, clinical and laboratory data and radiologic findings can help with the diagnosis [5]. Check for errors and try again. MRI is required for assessment of these lesions. 2003;180(6):1681-7. Case 1, Axial CT scan of twelfth thoracic spine vertebrae. Reference article, Radiopaedia.org (Accessed on 18 Jan 2023) https://doi.org/10.53347/rID-894, {"containerId":"expandableQuestionsContainer","displayRelatedArticles":true,"displayNextQuestion":true,"displaySkipQuestion":true,"articleId":894,"questionManager":null,"mcqUrl":"https://radiopaedia.org/articles/aneurysmal-bone-cyst/questions/2234?lang=us"}, Case 19: small aneurysmal bone cyst involving rib, WHO classification of soft tissue and bone tumors (5, fluid-fluid level containing bone lesions, bizarre parosteal osteochondromatous proliferation (Nora lesion), conventional intramedullary chondrosarcoma, dysplasia epiphysealis hemimelica (Trevor disease), solitary bone plasmacytoma with minimal bone marrow involvement, mixed lytic and sclerotic bone metastases, Lodwick classification of lytic bone lesions, Modified Lodwick-Madewell classification of lytic bone lesions, Giant cell reparative granuloma of small bone, 1. WHO Classification of Tumours Editorial Board. The reported cases were more common in women (n=13, 61.9%) than men (n=8, 38.1%). Check for errors and try again. Our goal was to present two cases of SBC who were referred to our department of spine surgery and review the literature. 14. Vertebral hemangiomas (VHs) are the most common benign tumors of the spine. Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys. JCO. lesions through the body, and they lack detailed bone MR imaging. 9.2 Large open cyst with multiple daughter vesicles inside The clear, yellow hydatid fluid contains sodium chloride, proteins, lipids, polysaccharides, and ions, having a neutral pH. Initially, the patient was treated conservatively but the pain did not improve. MRI of the Spine. When uncomplicated by fracture the cysts contain clear serosanguineous fluid surrounded by a thin fibrous membranous lining. show answer. Both genders are equally affected 1. 7-1 and 7-2 ). The most common differential diagnoses for SBC are aneurysmal bone cyst, brown tumor (hyperparathyroidism), infection and less commonly giant cell tumor. In the table the most common sclerotic bone tumors and tumor-like lesions in different age-groups are presented. They compose 28% of all skeletal hemangiomas, and the thoracic spine is the most frequent location. Discal cysts of the lumbar spine: report of five cases and review of the literature. {"url":"/signup-modal-props.json?lang=us\u0026email="}, Gaillard F, Botz B, Lukies M, et al. The aim of this review is to . Imaging differential considerations include 1: Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys. Results Radiography detected 87.1% (27/31) of the lesions; WBBS demonstrated increased radionuclide activity in all the lesions. Adam Greenspan, Gernot Jundt, Wolfgang Remagen. Every spine lesion should be approached carefully and pathologic confirmation is prudent. Skeletal Radiol. The cyst will clearly appear as a bubble-like growth near a facet joint, which is a connection between vertebrae of the spine. JMSR. This article has not yet been cited by articles in journals that are participating in Crossref Cited-by Linking. CT Considered the best method of diagnosis. The molecular criterion is the USP6 gene (at 17p13.2 locus) rearrangement. Steven P. Meyers. Unable to process the form. CONCLUSION. Lung laceration occurred in 46/364 dogs with thoracic trauma (prevalence 12.6%). The current study aimed to investigate the imaging manifestations of vertebral aneurysmal bone cyst (ABC), and examine the clinical value of interventional embolization. Its imaging diagnosis is usually difficult, . . 1 Two types of endplate changes were originally described, with a third type subsequently added in a later publication: 2, 3 If the spine is affected, they may present with symptoms related to nerve root compression 1,3. subarticular zone stenosiswith nerve root compression. The diagnosis of this lesion is possible by a combination of typical radiological and pathological features 1-6. 2020;11:274. Abstract The computed tomographic (CT) appearance and the pain radiographic and myelographic findings of vertebral hydatid disease (caused by Echinococcus granulosus) in two patients are presented. 3. The only symptom reported by the patient was cervical pain irradiated to shoulders. AJNR Am J Neuroradiol. Radiographics. A: Clinical presentation of spine aneurysmal bone cysts varies depending on the tumor location and involvement of the spinal cord and nerve roots. The cysts are of a variable signal, with a surrounding rim of low T1 and T2 signals. Considered the best method of diagnosis. Hammoud S, Weber K, McCarthy E. Unicameral Bone Cysts of the Pelvis: A Study of 16 Cases. Simple bone cyst (SBC) is not a common lesion in the spine and especially in the vertebral body. Logout. aneurysmal bone cyst (<2%): neural arch (60%); vertebral body (40%) Brown tumor (an osteoclast reaction in hyperparathyroidism) bone island. The vertebral endplate capillaries are tiny branches of interosseous arteries that ramify throughout the vertebral body. Albany Medical Center Medical Imaging is a medical group practice located in Albany, NY that specializes in Emergency Medicine and Radiology. Histologically aneurysmal bone cysts are characterized by the following 1,6: blood-filled cystic spaces separated by septa containing woven bone, bland fibroblasts, and multinucleated osteoclastic giant cells, the woven bone follows the border of the fibrous septa, bordered by osteoblasts. Welcome VIN Logout Hence, we used all these three imaging techniques to make a complete diagnosis. Soft Tissue and Bone Tumours. Radiology. A: The WHO diagnostic criteria of aneurysmal bone cysts are: - a multicystic bone lesion with fluid-fluid levels on imaging; - histologic evidence of new bone formation with fibroblasts, osteoclastic giant cells, and hemosiderin pigment in the cyst walls. MR images show a multiloculated mass of heterogeneous signal intensity that usually has blood products within (7). Unable to process the form. I suggest as others have that Cerebellar tonsillar ectopia as being trauma-induced and Arnorld Chiari 1 malformation to be congenital, though some would disagree. Society of Skeletal Radiology- White Paper. Eur Spine J. SUMMARY: Vertebral compression fractures are very common, especially in the elderly. Develop a solid understanding of head and neck ultrasound with this practical, point-of-care reference in the popular Diagnostic Ultrasound series. 2010;19 (10): 1621-6. spinal infection / inflammation / degeneration. Blumberg M. CT of Iliac Unicameral Bone Cysts. Case report and review of the literature, Unicameral bone cyst in the spinous process of a thoracic vertebra, Simple bone cyst with pathologic lumbar pedicle fracture: a case report, Simple bone cyst in spinous process of the c4 vertebra, A simple bone cyst located in the pedicle of the lumbar vertebra, Solitary bone cyst of the odontoid process and body of the axis: a case report, A rare cause of back pain: simple bone cyst in the lumbar vertebra, Solitary bone cyst of a lumbar vertebra treated with percutaneous steroid injection: a case report and review of literature, Simple bone cyst in the body of the lumbar vertebra, The lumbar vertebra. Search for other works by this author on: University of Shahid Beheshti Medical Sciences. Posterior spinal fusion was performed with instrumentation with pedicle screws from T10 to L2 and a mixture of autologous bone graft and allograft was used to achieve better fusion (Fig. In general, vertebral pneumatocysts are less common than intraosseous pneumatocysts in the pelvis, especially adjacent to the sacroiliac joint. Surgery shows promising outcomes in large SBCs in the vertebral body with a high risk of fracture. Vertebral pneumatocysts are gas-filled cavities within the spinal vertebrae. Case 1, (A): Axial T2-weighted MR image of twelfth thoracic spine vertebrae; (B): Sagittal T2-weightedimages of thoracic spine vertebrae. 2022;6(2):179-83. Imaging in Oncology. 12. The tumor has a heterogeneous appearance on both T1 and T2-weighted MR, with focal areas of high T1 signal, presumably representing blood. Wilkins R. Unicameral Bone Cysts. If fractured the bone usually heals normally 5. During the active phase, the cyst remains adjacent to the growth plate. Thank you for your interest in spreading the word on American Journal of Neuroradiology. . Two cases include a 24 year-old male and 26 year-old male with vertebral body lesion of T12 and L5 vertebrae,retrospectively. In this article we will discuss a systematic approach to the differential diagnosis of bone tumors and tumor-like lesions. When all of the radiologic findings were assessed, we concluded that the lesion had the characteristic radiologic appearance of a simple bone cyst. AJNR Am J Neuroradiol. Centrally flow voids are present, indicating a hypervascular nature. Primary bone tumors of the spine are much less common than secondary metastatic disease: plasmacytoma/multiple myeloma: most common primary bone cancer, chordoma: more common in sacrum (50%) and clivus (35%) than cervicothoracic vertebral column (15%), Langerhans cell histiocytosis(eosinophilic granuloma). According to the radiologic findings, the lesion was identified as a simple bone cyst, and the diagnosis was verified by surgical and histopathologic examinations. Haaga, John R. 1945-. An otherwise healthy 26-year-old female patient presented with a 1-year history of neck pain radiating to both upper extremities. Another suggestion is that venous obstruction of interstitial fluid drainage might be the cause (10). {"url":"/signup-modal-props.json?lang=us\u0026email="}, Gaillard F, Hacking C, Weerakkody Y, et al. Aneurysmal bone cysts are benign giant cell-rich lesions of unknown cause and are sometimes difficult to distinguish from other bone tumors 1-6. Locations include 1,2,5: proximal humerus: most common 50-60% proximal femur: 30% other long bones occurrence elsewhere is relatively uncommon, and usually occurs in adults spine: usually posterior elements 3). The term aneurysmal is derived from its radiographic appearance. On x-rays the facet joints and interspinous distances are usually widened and the disk space may be narrowed. (2015) Folia morphologica. A: Histological features of aneurysmal bone cysts usually show blood-filled spaces without endothelial lining between fibrous stromata. Gas measures about -580 to -1000 HU in density 3. In some instances, surgery with curettage and bone grafting is required. Surg Neurol Int. Wood W. Lovell, Robert B. The specimen was sent for pathologic examination. Case 1, Histopathological examination of the patient. Cross-sectional imaging may be required when lesions are in unusual . The reported peak is between 3 and 14 years of age, with the mean age at diagnosis being approximately 9 years. Published by Oxford University Press and JSCR Publishing Ltd. All rights reserved. The differential diagnosis for bone tumors is dependent on the age of the patient, with a very different set of differentials for the pediatric patient. Giant cell tumors have been described at the ends of long bones, characteristically around the knee. A systematic approach is useful for recognizing tumors of the spine with characteristic features such as bone island, osteoid osteoma, osteochondroma, chondrosarcoma, vertebral angioma, and aneurysmal bone . Vertebral body endplates are anatomically-discrete structures that form the interface between the vertebral bodies and the adjacent intervertebral discs. ADVERTISEMENT: Supporters see fewer/no ads, Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys. Typically vertebral haemangiomas occur in the thoracic spine, specifically within the vertebral body. The unicameral bone cyst (UBC), or simple or solitary bone cyst (SBC), is a common, benign, fluid-containing lesion, usually occurring in the metaphysis of long bones.The cause of the lesion is unknown. Diehn FE, Maus TP, Morris JM et-al. Diagnostic Neuroradiology. mri Axial T2 Sagittal T2 Sagittal STIR Sagittal T1 Sagittal T1 fat sat Axial T1 C+ Sagittal T1 C+ MRI Axial T2 The lateral view of radiographs of the cervical vertebrae demonstrated a faintly visible osteolytic lesion causing minimum expansion in the C4 vertebral spinous process (Fig 1). MRI usually detects the multiple blood-filled cystic spaces with fluid-fluid levels and septations separating the cysts. CT and MR Imaging of the Whole Body. They commonly affect the long bones in children and adolescents [1]. Dawson EG, Mirra JM, Yuhl ET, Lasser K. Brodsky AE, Khalil M, VanDeventer L. Matsumoto K, Fujii S, Mochizuki T, Hukuda S. Park CK, Cho KK, Lee SW, Jeon JS, Kang JK, Choi CR. Spontaneous regression may occur rarely or also following partial removal 3,13. Rarely, vertebral hemangiomas can exhibit extraosseous expansion with resulting compression of the spinal cord. Isabela Oliveira, MD - PGY-3, radiology resident, Department of RadiologyPatrcia Menandro, MD PGY-3, radiology resident, Department of RadiologyAntonio Rodrigues de Aguiar Neto, MD -radiologist, Department of RadiologyHospital da Restaurao Recife, PE Brazil, Spinal Aneurysmal Bone Cysts (ABCs): Optimal Management.
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