Amebic colitis is a disease revealing diverse clinical manifestations and endoscopic gross features and often confused with other types of colitis. In case of misdiagnosis as an idiopathic inflammatory bowel disease or delayed recognition of intestinal amebiasis, an undesirable outcome may occur resulting from erroneous administration of steroids or delayed antiamebic treatment. To demonstrate the pitfalls in the diagnosis and treatment of intestinal amebiasis, 3 cases of amebic colitis with atypical clinical manifestations are presented in this paper.
In conclusion, despite the low sensitivities of routine stool examination for parasite and
histopathologic confirmation in biopsy specimen, every effort must be made to find amebic
trophozoites either in fresh stool or biopsy specimens for prompt and correct diagnosis of
amebic colitis when we manage patients with chronic intestinal ulcerations, even though
their clinical course and endoscopic findings are not typical of amebiasis. Moreover, following initial successful anti-amebic therapy, more careful clinical, endoscopical, and parasitological follow-up should be done for the early detection of recurrence.
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