Free air under the diaphragms means that there is air under the diaphragm either on an upright chest X-ray or abdominal X-ray. This most frequently indicates free air in the peritoneal or abdominal cavity and can mean that a life threatening condition exists.

2018年10月25日 · Subdiaphragmatic free gas is one of the ways of detecting presence of free intraperitoneal gas (i.e. pneumoperitoneum). It is the presence of free, extraluminal gas in the anterior subhepatic space. Subdiaphragmatic free gas is well appreciated as the gas under the diaphragm and air in the lungs outline the diaphragmatic contour well.

Pneumoperitoneum is pneumatosis (abnormal presence of air or other gas) in the peritoneal cavity, a potential space within the abdominal cavity. The most common cause is a perforated abdominal organ, generally from a perforated peptic ulcer, although any part of the bowel may perforate from a benign ulcer, tumor or abdominal trauma.

2025年3月13日 · continuous diaphragm sign. Abdominal radiograph. Free gas within the peritoneal cavity can be detected on an abdominal radiograph. The signs created by the free intraperitoneal air can be further divided by anatomical compartments in relation to the pneumoperitoneum: bowel-related signs

Free air under the diaphragm refers to the presence of air in the abdominal cavity, specifically beneath the diaphragm. It can also be described as subdiaphragmatic free air or pneumoperitoneum. What are the common causes of free air under the diaphragm?

Every time you check a chest X-ray you should make sure there is no free intra-abdominal air under the diaphragm (pneumoperitoneum). This is a sign of bowel perforation. The normal hemi-diaphragms form distinct dome-shaped contours against the adjacent lungs.

2018年2月1日 · The Chilaiditi sign is often confused with pneumoperitoneum, which usually requires urgent abdominal surgery. But the presence of haustration or valvulae conniventes (folds in the small bowel mucosa) in the hepatodiaphragmatic space helps distinguish between intraluminal gas and free air.