[A case of retroperitoneal neurinoma]

A case of retroperitoneal neurinoma is reported. The patient was a 34-year-old female without symptoms. CT scan showed a large low density mass, a part of which was enhanced. US showed a lobulated cystic mass. Angiography showed avascular mass and portal vein was shown with displacement and stenosis. Pathological diagnosis was benign retroperitoneal neurinoma (Antoni A and Antoni B).