Abstract
Inguinal hernia repair is commonly performed operation in surgical practice. Thirty-five years old female patient was operated with the diagnosis of inguinal hernia. The inguinal defect was misdiagnosed as femoral vein aneurysm in surgical exploration. The postoperative diagnostic imaging revealed that the inguinal defect had been confused as femoral vein aneurysm due to intra-abdominal hemorrhogical fluid after an ovarian cyst rupture.