Items tagged “pneumoperitoneum”
6 results found
Article
Rigler sign (bowel)
The Rigler sign, also known as the double-wall sign, is a sign of pneumoperitoneum seen on an abdominal radiograph when gas is outlining both sides of the bowel wall, i.e. gas within the bowel's lumen and gas within the peritoneal cavity. It is seen with large amounts of pneumoperitoneum (>1000 ...
Article
Toxic megacolon
Toxic megacolon is an acute complication seen in both types of inflammatory bowel disease and, less commonly, in infectious colitis and other types of colitis. It is due to fulminant colitis, which causes loss of the neurogenic tone of the colon, leading to severe dilatation and increasing the r...
Article
Subdiaphragmatic free gas
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.
Radiographic features
Plain radiograph
Subdiaphragmatic free gas is well appreciated as the g...
Article
Inverted "V" sign (pneumoperitoneum)
The inverted "V" sign, also known as the lateral umbilical ligament sign, is a sign of pneumoperitoneum manifested by the visualization of an inverted "V" shape in the pelvis on supine view of abdominal radiographs. It represents free gas outlining the lateral umbilical ligaments. In infants, t...
Article
Postoperative free intraperitoneal gas
Postoperative free intraperitoneal gas refers to the presence of gas in the peritoneal cavity following a surgical procedure and may result from open or laparoscopic surgical techniques.
Terminology
Postoperative free intraperitoneal gas is also referred to as postoperative pneumoperitoneum 1....
Article
Peritoneal stripe sign (pneumoperitoneum)
The peritoneal stripe sign in abdominal ultrasonography is considered indicative of intraperitoneal free air, present in pneumoperitoneum. Free air in the abdomen will collect in an anti-dependent manner, typically the anterior prehepatic space in the supine patient, settling against the parieta...
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