A 51 year-old man with dysuria with bloody urine for 2 weeeks.
Ultrasound detected thickening wall of sigmoid colon which adhered the urinary bladder. And there was a fistula between with air into the urinary bladder.
MSCT and cystoscopy confirmed a colonourinary fistula.
Result of specimen post-op of the endoscopic surgery was a perforated diverticulitis which made a fistula into the urinary bladder wall.