Pneumaturia is the passage of gas mixed with urine, and may be as a result
of a fistula between the bowel and the bladder - a vesico-colic fistula.
Proteinuria may also present with persistent bubbles in the urine ('foamy'
Causes of bubbles in the urine therefore include:
- vesico-colic fistula
- causes include:
- diverticular disease
- Crohn's disease
- carcinoma of the colon or bladder
- rarely, gas-producing bacterial infection of the urinary tract