In this case report, a tumour was found in the coecum under a colonoscopy, performed after positive screening test for colorectal cancer in an asymptomatic 61-year-old man. Pathology from biopsies showed numerous trophozoites in the lamina propria, compatible with Entamoeba histolytica. In faecal samples, E. histolytica was detected by species-specific real-time polymerase chain reaction. Infection caused by E. histolytica can occur several years after exposure. If E. histolytica is detected, treatment is always recommended as prevention for later development of invasive infection.
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