There numerous causes of gas in the bladder. In the hospital setting by far the most common is the recent placement of an indwelling urinary catheter. Other causes include:
- IDC by far the most common cause
- cystoscopy, etc
- intraluminal and intramural gas
- most frequently in patients with diabetes mellitus
- vesical fungus ball: most frequently Candida albicans in debilitated patients.
- foreign bodies