Journal
SKELETAL RADIOLOGY
Volume 42, Issue 12, Pages 1665-1671Publisher
SPRINGER
DOI: 10.1007/s00256-013-1712-6
Keywords
Schwannoma; Schwannomatosis; Bone tumor; Neurofibromatosis
Funding
- Oxford NIHR BRU
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This study investigates the clinical, radiological, and pathological features of two cases of intraosseous schwannoma that arose in patients with multiple soft tissue schwannomas. In both cases, the patients were adult females and the tibial bone was affected. Vestibular schwannomas were not identified, indicating that these were not cases of neurofibromatosis 2 (NF2). Radiographs showed a well-defined lytic lesion in the proximal tibia; in one case, this was associated with a pathological fracture. Histologically, both cases showed typical features of benign schwannoma. Molecular analysis of one of the excised tumors showed different alterations in the NF2 gene in keeping with a diagnosis of schwannomatosis. Our findings show for the first time that intraosseous schwannomas can occur in schwannomatosis.
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