The ectopic endometriosis in the perineum is very rare (0.2% of ectopic endometriosis). We studied 16 cases of vaginoperineal endometriosis. Fifteen of them were localized in the site of an episiotomy scar and in one there was another focus of a severe endometriosis of multiple localizations. All the patients were submitted to anamnesis, physical, gynecologic and proctologic examination, surgical excition, histopathologic study of the lesion and control. All the patients are asymptomatic after treatment. To cure definitively the disease it is necessary to make a complete ablation of the endometrial lesion. Eventually, hormonal treatments could be use in case there were other endometrial localizations besides the vaginoperineal one.