Abnormal intra-abdominal gas
Abnormal intra-abdominal gas may be seen on a chest or abdominal radiograph, or 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
