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Endometriosis is a significant health problem for women of reproductive age. Defined as the presence of endometrial-like glands and stroma in any extrauterine site. It is a disease that has fascinated gynecologists for more than a century. Incidence Endometriosis occurs in 7-10 % of women in the general population and up to 50 % of premenopausal women (1), with a prevalence of 38 % (range, 20-50%) (2,3,4) in infertile women, and in 71-87 % of women with chronic pelvic pain (5,6,7). Contrary to much speculation, there are no data to support the view that the incidence of endometriosis is increasing, although improved recognition of endometriosis lesions (8) may have led to an increase in the rate of detection. There also appears to be no particular racial predisposition to endometriosis. A familial association of endometriosis has been documented (9), and patients with an affected first-degree relative have nearly a 10-fold increased risk of developing endometriosis. Etiology