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Case of the Week 37

The follow sections of colon were taken from a Mexican farmer who presented with acute bowel perforation. Numerous deep and confluent ulcers were seen along the length of the colonic mucosa.

Looks like Entamoeba histolytica colitis. Invasive organism with finely granular cytoplasm and an ingested RBC in the cytoplasm, the latter characteristic being diagnostic for this species of Entamoeba.

yes, entamoeba. Amibe in french