부산대학교 도서관

A case of retroperitoneal venous aneurysm is reported. A 79-year-old man was referred to a hospital because of edema of both feet. Computed tomography revealed a retroperitoneal cyst. The cyst compressed inferior vena cava. Therefore, he was admitted to our hospital to undergo surgical treatment. October 2012, transperitoneal extirpation of the cyst was performed. The cyst contained yellowish serous fluid. Microscopically, the wall of cyst Structure of the cyst wall was found to be consistent with the structure of the vein wall by immunostaining. Pathological diagnosis was retroperitoneal cyst of venous origin. Several similar cases have been reported as retroperitoneal venous aneurysm. This is the 11th case of retroperitoneal aneurysm reported in Japan.