Perineal endometriosis without perineal trauma： a case report

Endometriosis is a common disease in women. It frequently occurs in the ovaries, uterosacral ligament and other pelvic organs. Perineal endometriosis is very rare. The incidence of perineal endometriosis in our hospital was 0.87‰.1 Most perineal endometriosis occurred after vaginal delivery with perineal tearing or episiotomy. Perineal endometriosis without perineal trauma is even rarer. Extraperitoneal endometriosis, although of minor significance in clinical practice, may prove to be important in understanding the pathophysiology of this disease.