Abstract
Cytomegalovirus (CMV) inclusions were found at colonic perforation sites in three patients with clinical settings suggesting a compromised immunologic status. This could be interpreted as: (1) CMV was an etiologic agent in these perforations; or (2) CMV was an opportunistic superinfection in areas of preexisting inflammation. To determine which interpretation was more likely, we examined material from these three and ten similar patients with colonic perforations, identifying any potential causative factors present. Eleven of the 13 patients had an identifiable cause of perforation, either tumor, diverticulitis, arteritis, or pancreatic pseudocyst, while two remained unexplained. If the presence of CMV merely represented an opportunistic superinfection, then all 13 should have been at equal risk of infection. However, CMV was present in only one of the 11 cases with another identifiable cause of perforation but was present in both of the cases without another cause. This is consistent with the hypothesis that CMV was in fact an etiologic or contributing factor in those cases where it was present. Other cases of CMV infection of the gastrointestinal tract were studied to determine the mechanism by which this infection could lead to perforation of a viscus. In our three cases with perforation, four additional cases of CMV infection of the colon which we have studied, and 30 other cases in the literature, CMV inclusions were found only in areas of ulceration or perforation, never in undamaged mucosa. Thus there is as yet no evidence that CMV can be a primary cause of colonic mucosal injury. It remains likely, however, that a mucosal injury due to another cause may be followed by CMV infection of the granulation tissue which then may lead to further injury and perforation.
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Goodman, Z.D., Boitnott, J.K. & Yardley, J.H. Perforation of the colon associated with cytomegalovirus infection. Digest Dis Sci 24, 376–380 (1979). https://doi.org/10.1007/BF01297124
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DOI: https://doi.org/10.1007/BF01297124