ISSUE 1

Perineal endometriosis is a disease characterized by the presence of endometrial tissue in the perineal region. Perineal endometriosis with anal sphincter involvement is an infrequent oc-currence. In many cases it is confused with granuloma, abscess, lipoma, adenopathy. The best treatment to obtain satisfactory cure consists in the wide excision, but it may cause incontinence if the anal sphincter is involved. Conversely, narrow excision may result in incomplete removal, with increased recurrence rates and need of additional hormonal therapy. In this paper we describe a 45 year old patient, with diagnosis of perianal endometrioma with anal sphincter involvement. The patient went through surgery with wide excision and preserved anal sphincter. After one year follow-up there were not complications reported by fecal incontinence. In contrast, the perineal endometriosis is considered an infrequent occurrence of pelvic endometriosis.