Intestinal polyposis associated with oxyurid parasites in a chimpanzee (Pan troglodytes)

A 40-year-old male chimpanzee had multiple intestinal polyps associated with immature male oxyurid parasites. The gross and histologic characteristics of these lesions were identical to those produced by Nochtia nochti in the stomach and esophagus of Old World primates. It was theorized that the lesions resulted from hypersensitivity to oxyurid infection in an aberrant host.