Urinary fistulas may be vesicovaginal, ureterovaginal, urethrovaginal, vesicouterine, or colovesical
Accuracy of computerized tomography in diagnosis of colovesical
fistula secondary to diverticular disease.
Vaginal fistula, colovesical
fistula (particularly due to diverticular disease), Crohn's disease or carcinoma of the colon or bladder, instrumentation and after trauma are other causes of gas production, and differential diagnosis should be made with emphysematous cystitis.
The latter patient also developed colovesical
and enteroconduit fistulae due to a small bowel anastomotic leak.
Complications of diverticulitis include intra- and extramural abscesses, sinus tract and fistula formation (especially colovesical
fistula), bowel and ureteral obstruction, gross intraperitoneal or retroperitoneal perforation, peritonitis, septic thrombosis of portomesenteric veins, and liver abscess.