Small-intestinal mucosa in pseudoobstruction syndromes.
The purpose of this investigation was to determine the frequency and severity of small intestinal mucosal damage in pseudoobstruction syndromes. One hundred eighty-nine interpretable biopsies from 12 patients were blindly reviewed by two investigators. The underlying disorders were scleroderma in 7 and idiopathic intestinal pseudoobstruction in 5. All 12 had small-intestinal dilatation on small-bowel series. Eight of the 12 patients had biopsies characterized by moderate to severe mucosal damage; 3 of these had some biopsies which were flat. The damage did not correlate with: (1) types and numbers of organisms recovered from small intestinal aspirates; (2) duration of illness; (3) degree of dilatation of the proximal small bowel; (4) concentrations of deconjugated bile salts in small intestinal fluid; or (5) amount of fat absorbed in fat-balance studies. We conclude that mucosal damage is common in pseudoobstruction syndromes. The pathogenesis of the damage and its relationship to intraluminal bacteria remain undefined.
D000293:Adolescent; D000328:Adult; D001706:Biopsy; D004848:Epithelium / Q000473:pathology; D005260:Female; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology*; D007415:Intestinal Obstruction / Q000473:pathology*; D007421:Intestine, Small / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D013577:Syndrome