Thoracic intradural cystic schwannoma: a case report.

Spinal schwannomas are benign tumors arising from spinal nerve root sheaths. These are the most common intradural extramedullary spinal tumors. Schwannomas are mostly solid or heterogeneous solid tumors. Cystic schwannomas are rare lesions. We present a 27-year-old woman with an intradural extramedullary cystic tumor in the lower thoracic region who complained of back pain and walking difficulty. The patient was operated and the tumor was totally removed. The postoperative course was uneventful. The histopathological diagnosis was cystic schwannoma. Differentiation of cystic schwannomas from other cystic mass lesions can be difficult. Magnetic resonance imaging and histopathological findings are important for evaluating these tumors.