Amoebic liver abscess in a bisexual man.

A bisexual man who had not travelled outside the U.K. had an amoebic liver abscess. Although it is reported that Entamoeba histolytica is usually of a non-pathogenic type in homosexual men in the U.K., it is important to diagnose invasive amoebiasis in this high-risk group so that appropriate treatment can be given.