American Journal of Roentgenology, Vol 172, 517-521, Copyright © 1999 by American Roentgen Ray Society

ARTICLES

Atypical presentation of Clostridium difficile colitis in patients with cystic fibrosis

LA Binkovitz, E Allen, D Bloom, F Long, S Hammond, C Buonomo and LF Donnelly
Department of Radiology, Columbus Children's Hospital, OH 43205, USA.

OBJECTIVE: This report describes the unusual presentation of Clostridium difficile colitis in five patients with cystic fibrosis and the role of CT in first suggesting the correct diagnosis in this group of patients. Because of the absence of watery diarrhea and the presence of abdominal bloating and decreased stooling, cystic fibrosis patients with C. difficile colitis will be treated for stool impaction, meconium ileus equivalent, or distal intestinal obstruction syndrome. CT of the abdomen, performed in these five patients because of their lack of improvement after standard therapy for stool impaction, showed an extensive pancolitis later confirmed to be caused by C. difficile infection. CONCLUSION: In patients with cystic fibrosis, imaging findings of a pancolitis should raise the possibility of C. difficile colitis despite the lack of watery diarrhea. Anticlostridial treatment can be initiated before bacteriologic confirmation is obtained.
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