Pneumaturia

Overview
Pneumaturia is the passage of gas or "air" in urine. This may be seen or described as "bubbles in the urine".

Differential diagnosis of causes of pneumaturia
A common cause of pneumaturia is vesico-colic fistulae (communications between the colon and bladder). These may occur as a complication of diverticular disease.

Other causes include:
 * Crohn's disease
 * Carcinoma of the colon or bladder
 * A gas-producing UTI (rare).