Abnormal intraabdominal gas collections visualized on computed tomography: A clinical and experimental study
- 24 Downloads
Abnormal intraabdominal gas collections visualized on CT scans during a 1-year period were reviewed. There were 34 collections in 29 patients. Sixty-two percent of these abnormalities were noninfectious and iatrogenic in origin, usually a direct result of procedures such as surgery, diagnostic tests, and needle or tube placement. Infections/abscesses (18%), hernias (15%), and gastrointestinal perforations (6%) produced the other abnormal gas collections. In the experimental animal study, gas collections as small as 5cc could be visualized on CT images. Collections of up to 20cc were visible for similar periods of time on both CT scans and conventional radiographs. It is concluded that most abnormally placed gas collections seen on CT are iatrogenic and that CT scans are very sensitive for the detection of such collections.
Key wordsAbdomen, abnormal gas collections Computed tomography, abdominal abscess
Unable to display preview. Download preview PDF.
- 19.Nelson SW: Extraluminal gas collections due to diseases of the gastrointestinal tract.AJR 115:225–248, 1972Google Scholar
- 23.Miller RE, Nelson SW: The roentgenologic demonstration of tiny amounts of free intraperitoneal gas: experimental and clinical studies.AJR 112:574–585, 1971Google Scholar