An ameboma, also known as an amebic granuloma, is a rare complication of Entamoeba histolytica infection, where in response to the infecting amoeba there is formation of annular colonic granulation, which results in a large local lesion of the bowel.
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Clinical features
The ameboma may manifest as a right lower quadrant abdominal mass, which may be mistaken for carcinoma, tuberculosis, Crohn's disease, actinomycosis, or lymphoma.
Diagnosis
Biopsy is necessary for definitive diagnosis.
References
Ameboma Wikipedia(Text) CC BY-SA