Abnormal intra-abdominal gas is an important radiologic finding with many potential causes. It may be seen on a chest radiograph, abdominal radiograph, CT or MRI.
- pneumoperitoneum
- retropneumoperitoneum
-
pseudopneumoperitoneum
- abnormally located bowel, e.g. Chilaiditi syndrome (bowel interposed between liver and hemidiaphragm), inguinal hernia
- intramural gas
- abscess gas
- pneumobilia
- portal venous gas
- emphysematous cholecystitis
- emphysematous cystitis
- emphysematous pancreatitis
- emphysematous pyelonephritis