Perforation of the colon above the peritoneal reflection during the barium-enema examination.

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Abstract
Four cases of perforation of the colon above the peritoneal reflection during a Ba enema examination were reviewed with regard to the type of examination, site of perforation, status of the colon, clinical manifestations, mode of detection and consequences. Perforation above the peritoneal reflection does not seem to be directly related to technical factors. The cecum and ascending colon, with their larger lumina, are the most likely sites. Because such patients are usually asymptomatic at the time, careful examination of post-fluoroscopic radiographs for signs of perforation is strongly recommended.