[Perianal cutaneous amebiasis. Report of two cases].

Perianal cutaneous amebiasis is a rare entity, with 0.03% to 0.07% reported incidence. We present two cases of perianal cutaneous amebiasis, both in male patients. Diagnosis was established by biopsy, with demonstration of Entamoeba histolytica trophozoites. Treatment with metronidazol was performed with good outcome. Although incidence of perianal cutaneous amebiasis is low, this entity must be kept in mind when painful atypical ulcers appear in this region. Diagnosis must be confirmed by identification of the parasite and treatment must be established with antiamebic extra-luminal drugs.