CT myelography of calcified thoracic neurilemmoma.

Radiographic demonstration of calcification within spinal canal tumors is rare [1] . The most common lesion of this type showing calcification is a meningioma. Other lesions showing calcification include neurofibromas, hemangioblastomas, neuroblastomas, ganglioneuromas, and herniated thoracic disks. Very rarely is calcification seen within neurilemomas [2, 3] , and, if present, it may be noted histologically but not radiographically [2]. Our case is the first reported computed tomographic (CT) myelography demonstration of a rare, calcified, thoracic, extradural neurilemoma.