Fig. 1From: Desmoid-type fibromatosis mimicking cystic retroperitoneal mass: case report and literature reviewRetroperitoneal desmoid-type fibromatosis in a 46-year-old man. a Abdominal plain radiography shows a large mass-like opacity in the left abdomen. b The ultrasonography shows a large anechoic cystic mass with a thick wall (arrows) without an intracystic solid portion or septum in the left abdomenBack to article page