An underestimated sexually transmitted infection: amoebiasis

BMJ Case Rep. 2019 May 10;12(5):e228942. doi: 10.1136/bcr-2018-228942.

Abstract

Entamoeba histolytica is a cosmopolitan pathogenic parasite. It is spread via the feco-oral route and, to a lesser extent, via sexual intercourse. We report a case of hepatic and intestinal amoebiasis in a 67-year-old man who had never travelled to an endemic area. Abdominal CT investigations detected two liver abscesses and chronic colitis. Positive amoebic serology and a positive PCR test for E. histolytica in the hepatic liquid and faeces confirmed the diagnosis. Curative metronidazole and tiliquinol-tilbroquinol were administered successfully. The patient had been contaminated through heterosexual intercourse with his healthy French female partner who was a carrier of the parasite. Though unusual, amoebiasis as a result of sexual transmission should be considered in non-endemic areas in people who have never travelled abroad, particularly in the presence of clinical symptoms such as liver abscesses or chronic diarrhoea.

Keywords: liver disease; sexual transmitted infections (bacterial); tropical medicine (infectious disease).

Publication types

  • Case Reports

MeSH terms

  • Aged
  • Diarrhea / etiology
  • Entamoeba histolytica / isolation & purification
  • Entamoebiasis / complications
  • Entamoebiasis / diagnosis*
  • Female
  • Humans
  • Liver Abscess / etiology
  • Male
  • Sexual Partners
  • Sexually Transmitted Diseases / complications
  • Sexually Transmitted Diseases / diagnosis*