• Amey R Savardekar, Deviprasad Patra, Debajyoti Chatterjee, Chirag K Ahuja, and Pravin Salunke.
• Department of Neurosurgery, Post-graduate Institute of Medical Education and Research, Chandigarh, India.
• Surg Neurol Int. 2015 Jan 1;6(Suppl 4):S182-5.

BackgroundTypical aneurysmal bone cysts (ABCs) are osteolytic, multicystic lesions with parietal sclerosis and blood-filled cysts. In rare instances, the cystic components may be completely absent. Such solid variants in ABC (s-ABC) exhibit a solid architecture; making the clinical, radiological, and histological differentiation from other solid bone tumors like osteosarcoma (especially giant cell rich osteosarcoma) and giant cell tumor, a difficult task.Case ReportWe report the case of a 45-year-old male presenting with a giant solid cervical spine lesion. Histopathology revealed solid variant of ABC, even though the radiological and fine needle aspiration cytology studies pointed toward a giant cell tumor.ConclusionWe aim to discuss the clinical, radiological, and histological findings of solid ABC (a rare benign entity) vis-à-vis the common neoplastic entities of osteosarcoma and giant cell tumor. The histopathological nuisances in making the diagnosis of s-ABC are put forth, along with its impact on management of such giant bony spinal lesions.

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