Pneumoperitoneum is the presence of air or gas in the abdominal (peritoneal) cavity. It is often seen on X-ray, but small amounts are often missed, and CT is nowadays regarded as a criterion standard in the assessment of a pneumoperitoneum. CT can visualize quantities as small as 5 cm³ of air or gas. The most common cause is a perforated abdomina...
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http://en.wikipedia.org/wiki/Pneumoperitoneum
<radiology> Aetiology, iatrogenic, surgery, dialysis, spontaneous, peptic perforation, bowel obstruction, toxic megacolon, trauma, penetrating or blunt injury, miscellaneous, female genital tract (intercourse, douching, insufflation), pneumatosis intestinalis or coli duration, typically 4-5 days (up to 4 weeks), persists longer in adults than...
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http://www.encyclo.co.uk/local/20973
(noo″mo-per″ĭ-to-ne´әm) the presence of air or gas in the peritoneal cavity, occurring pathologically or introduced intentionally.
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http://www.encyclo.co.uk/local/21001
Type: Term Pronunciation: nū′mō-per′i-tō-nē′ŭm Definitions: 1. Presence of air or gas in the peritoneal cavity as a result of disease, or produced artificially in the abdomen to achieve exposure during laparoscopic surgery.
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http://www.medilexicon.com/medicaldictionary.php?t=70430
pneumoperitoneum 1. The presence of air or gas in the peritoneal cavity. 2. Injection of a gas into the peritoneal cavity as a diagnostic or therapeutic measure.
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http://www.wordinfo.info/words/index/info/view_unit/1610/18
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