kidney and urinary tract disorders
Gas in Urine
Introduction
Passing gas (air) in the urine, a rare symptom, usually indicates an abnormal opening (fistula) between the urinary tract and the intestine, which normally contains gas. A fistula may be a complication of Diverticulitis , other types of intestinal inflammation, an abscess, or cancer. A fistula between the bladder and the vagina may also cause gas to escape into the urine. Rarely, certain bacteria in the urine may produce gas. Doctors do a pelvic examination in affected women. To diagnose fistulas, doctors may insert a flexible viewing tube into the bladder ( Cystoscopy ) or colon ( Fistulas are usually repaired surgically. (See also Overview of Urinary Tract Symptoms .) 