Barium enema examination following biopsy of the rectum or colon.

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Abstract
A 4-component study was designed to evaluate the possible risk of perforation during Ba enema examination following biopsy of the rectum or colon. The study included a survey of gastrointestinal radiologists, an in vitro study of pig colons after biopsy, colon, pressure measurements in human subjects and histological analysis of human colonoscopic biopsy specimens. Superficial biopsy of the rectum or colon performed with small colonoscopic forceps apparently is a safe procedure and no waiting period is necessary before performing a Ba enema study. However, biopsy of the colon or rectum with proctoscopic forceps appears to have greater potential for perforation and a waiting period between biopsy and Ba enema study is recommended. Radiologists should distinguish between proctoscopic and colonoscopic biopsy procedures before determining when a Ba enema study will be performed following biopsy.