histolytica infection, with over 100,000 deaths reported annually. Approximately 50 million people develop colitis or extraintestinal disease worldwide as a result of E. Intestinal amoebiasis is caused by the protozoon E. Post-acute intraluminal treatment was indicated in 28 (56%). After treatment with metronidazole (82%) or tinidazole (8%), all patients had good outcomes. Diagnosis was made through microbiological study in 45 (90%) and/or histological identification of amoebae in colon biopsies in 10 (20%). Diarrhoea, abdominal pain and dysentery were the most frequently recorded symptoms of invasive amoebae. Preexisting pathological conditions or any kind of immunosuppression were identified in 29 (58%) patients of these, 13 (26%) had HIV infection-all of them men who have sex with men-and 5 (10%) had inflammatory bowel disease. Antecedents of any international travel were reported for 28 (56%), the most frequent destinations having been the Indian subcontinent, South and Central America and sub-Saharan Africa.
Thirty-six (72%) were men, and immigrants accounted for 46% of all cases. During the study period 50 patients were diagnosed with amoebic colitis. This was a retrospective observational study in which data from all patients diagnosed with amoebic colitis attending at the International Health Units of two tertiary referral hospitals, Germans Trias i Pujol University Hospital (Badalona, North Barcelona Metropolitan Area) and Vall d’Hebron University Hospital (Barcelona city) between 20 were analysed.