後腹膜真性血液嚢胞の1例

Abstract

真性血液嚢胞は胎生期の静脈形成不全若しくは出生後に静脈瘤状拡張した稀な疾患であるが, 頸部ではなく後腹膜腔に発生した59歳男性例は極めて稀な症例で, 外国文献にはなく, 本邦5例目に当る

Venous aneurysm is a rare entity and the disease occurring in the retroperitoneal space has been reported in only 4 cases. Therefore, the fifth case of retroperitoneal venous aneurysm on the literature was described. A 59-year-old male was referred to our clinic because of painless large mass in the left abdomen. Computed tomography, ultrasonography, and magnetic resonance imaging revealed a cystic mass at the perinephric space. The resected cyst contained yellow-grayish fluid. The cyst wall was microscopically formed of 4 layers; blood and cholesterin, hyaline, muscle and collagen from the inner to outer side. He is well without any trouble after the operation.