Figure 11a. Intraperitoneal bladder injury in a 65-year-old man who had undergone laparoscopic low anterior resection. Continuous high outputs from the surgical drains were seen postoperatively. (a) CT cystogram demonstrates a bladder catheter and contrast material within the urinary bladder. Note the contrast material posterior to the bladder (arrowheads) and the surgical drain traversing the urinary bladder dome (arrow). (b) CT cystogram obtained cephalad to a demonstrates intraperitoneal leakage of contrast material into the right paracolic gutter and adjacent to the cecum (arrow). The surgical drain was removed, and the patient was successfully treated with prolonged bladder catheter drainage alone. Although most intraperitoneal bladder injuries require surgical intervention, many iatrogenic injuries to the bladder are minor and can be managed conservatively.