May Be Caused by

 Common

Abdominal abscess

Bladder distended with air

Cecal distention

Chronic bowel obstruction

Dilated stomach

Duodenal obstruction

Emphysematous cystitis

Extraperitoneal gas

Gastric outlet obstruction

Obstructed diaphragmatic hernia

Obstructed external hernia

Obstructed hiatal hernia

Obstructed internal hernia

Pneumoperitoneum

Retroperitoneal gas

Sentinel loop

 Uncommon

Abdominal wall gas

Amnionitis

Blind loop syndrome

Communicating duplication cyst

Emphysematous cholecystitis

Emphysematous peritonitis

Emphysematous vaginitis

Endometritis

Gangrene of liver

Giant colonic diverticulum

Giant duodenal diverticulum

Giant Meckel diverticulum

Hydropneumometrocolpos

Infected fetus

Infected fibroid

Infected ovarian cyst

Physometra

Postoperative state