• S V Nash, R Bourgeault, and M Sands.
• Department of Pathology, Baystate Medical Center, Springfield, Massachusetts 01199, USA.
• J. Clin. Gastroenterol. 1997 Sep 1; 25 (2): 476-9.

AbstractIn this retrospective review of colonic tissue from 21 patients with a positive stool assay for Clostridium difficile toxin, four groups of patients were identified by pathologic examination. Classic pseudomembranous colitis was identified in 38% of patients in colon biopsies, resections, and at postmortem examination. One third of patients had acute colitis without specific features on colon biopsies at the time of a positive toxin assay. Effects of C. difficile toxin in patients with idiopathic inflammatory bowel disease (10%) could not be pathologically separated from activity of the underlying disease. In 19% of patients, no acute or chronic colitis or pseudomembranous colitis was noted. This report reminds gastroenterologists that C. difficile infection is associated with a range of pathologic changes similar to the well known clinical spectrum of disease.

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