Pneumaturia is the passage of gas or "air" in urine.

A common cause of pneumaturia is colovesical fistula (communication between the colon and bladder).

Pneumaturia can also happen if a urinary catheter was recently in the bladder.

[citation needed] Other key differentials:[citation needed] Male scuba divers utilizing condom catheters or female divers using a She-p external catching device for their dry suits are also susceptible to pneumaturia.

[1] Diagnosis is made by patient history of passing air or a sputtering urine stream.