Pseudomembranous enteritis after proctocolectomy

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Abstract
Intestinal pseudomembrane formation, sometimes a manifestation of antibiotic-associated diarrheal illnesses, is typically limited to the colon but rarely may affect the small bowel. A 56-year-old female taking antibiotics, who had undergone proctocolectomy for idiopathic inflammatory bowel disease, presented with septic shock and hypotension. A partial small-bowel resection revealed extensive mucosal pseudomembranes, which were cultured positive forClostridium difficile. Intestinal drainage contents from an ileostomy were enzyme immunoassay positive forC. difficile toxin A. Gross and histopathologic features of the small-bowel resection specimen were similar to those characteristic of pseudomembranous colitis. The patient was treated successfully with metronidazole. These findings suggest a reservoir forC. difficile also exists in the small intestine and that conditions for enhanced mucosal susceptibility toC. difficile overgrowth may occur in the small-bowel environment of antibiotic-treated patients after colectomy. Pseudomembranous enteritis should be a consideration in those patients who present with purulent ostomy drainage, abdominal pain, fever, leukocytosis, or symptoms of septic shock.