Radiographic spectrum of rectocolonic calcification from schistosomiasis

Rectocolonic calcification was detected radiographically in 17 sites in 14 patients undergoing excretory urography for the assessment of urinary schistosomiasis. The right colon was involved in 11 sites, the rectum in four, and the left colon in two. The pattern of calcification varied according to the degree of bowel distension. A laminar pattern was common to all sites and occurred when the rectum or colon was distended with air, feces, or barium. A laminar or irregular amorphous density was found in the empty colon, whereas the calcified, empty rectum had a corrugated pattern. Rectocolonic calcification is probably the most common radiographic manifestation of schistosomal infestation of the gastrointestinal tract.
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