How can peritonitis result from urinary tract infection?

Not Sure It Can???: Peritonitis is inflammation of the lining of the abdominal cavity which typically occurs following the rupture of an internal organ (appendicitis, perf'd ulcer, diverticulitis, etc). Utis can ascend into the kidney, causing pyelonephritis, and even spread throughout the bloodstream causing urosepsis. In the absence of (traumatic) rupture of the bladder or rare infections (tb), peritonitis rare.