Abstract
The first case was a 47-year-old female with diabetes. Left dorsal pain appeared 8 months previously. She became unable to walk, and the previous physician sent her to our hospital by ambulance. A large volume of gas was noted in the left retroperitoneal space over the region around the hip joint. Open drainage and colostomy were performed for retroperitoneal abscess caused by perforation of the descending colon and purulent coxitis directly caused by the abscess. When retroperitoneal infection was controlled, acetabular curettage and femoral head transection were performed for myelitis of the left acetabula and femoral head. The second case was a 52-year-old male with no particular past medical history. He had had right lower back pain for a month and was referred to us by the previous physician. Open drainage was appropriately performed for secondary iliopsoas abscess which may have been caused by perforation of a diverticulum of the ascending colon, but complication by purulent coxitis and myelitis right occurred, and acetabular curettage and femoral head transection were performed. It may be necessary to pay attention to complications caused by purulent coxitis and myelitis when the iliopsoas muscle is the main progression pathway of gastrointestinal perforation-induced retroperitoneal abscess.
