Totally cystic intradural schwannoma in thoracic region
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Schwannoma is a benign slow-growing encapsulated tumor that arises from myelinated nerve sheath. Total cystic change is rare in these tumors. Schwannomas are the most common benign intradural extramedullary spinal tumors arising from the sheaths of the spinal roots. Most spinal schwannomas are solitary and solid and some present with a dumbbell shape. The lumbar region is the commonest site for the occurrence of spinal schwannomas. Although schwannomas located in the thoracic region are not rare, totally cystic schwannomas in this region are very rare.Herein, we report a 60-year-old male presenting with a backache radiating along the chest wall and weakness of both lower limbs. He had spastic paraparesis. Magnetic resonance imaging revealed a cystic mass in the thoracic region. At operation, the cystic mass was seen to be attached to D4 dorsal rootlets. It was excised in toto and histopathology confirmed it to be a schwannoma.

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