Schwannoma of the seminal vesicle.

A 79-year-old man presented with a history of nocturia. On rectal examination a solid mass above the prostate gland was discovered. Computerized tomography (CT) and ultrasound (US) showed that the mass was solid and was arising from the seminal vesicle. After a needle biopsy, pathology and immunocytochemistry confirmed the mass to be Schwannoma. Tumors of the seminal vesicle are rare. To our knowledge Schwannoma of the seminal vesicle has not been described before.