Introduction: Endometriosis is a state of chronic inflammation in the pelvis and is characterised by endometrial-type tissue outside of the uterus. Although exact prevalence of endometriosis is unknown, it roughly affects 2 to 10% of the female population, but 30 to 45% of females with infertility [1] Pelvic endometriosis commonly involve the ovaries, and bilateral involvement occurs in one third to one half of cases [2,3 ]. Ovarian endometrioma rarely exceeds 10–15 cm in diameter [2,3].