P142Endometrioma simulating ovarian cancer in a postmenopausal woman – report of one case

Background External endometriosis is principally a disease of active reproductive life which is seldom found during postmenopausal years because of estrogen deprivation. Endometriosis is a great mimicker of other pelvic pathologies especially in postmenopausal years. We report here, a case of ovarian endometrioma in a postmenopausal woman simulating ovarian cancer. Ultrasonographic features, clinical presentation, differential diagnosis and treatment modalities of this rare case are presented and discussed. Case 76‐year‐old woman gravida 3 para 2 presented with an asymptomatic pelvic mass discovered on gynecologic examination. An ultrasound examination was requested to investigate the nature of this mass. She was otherwise symptom‐free surprisingly except for occasionally occuring bilateral pelvic pain. Longitidunal sonograms showed an irregular, partially solid and cystic mass in the right adnexal region. A transverse scan showed the presence of a complex right adnexal mass measuring 6 × 7 × 7 cm in diameter which was considered most likely to be malignant. CA‐125 level of her was slightly elevated. Urgent laparatomy revealed no evidence of malignancy and the mass proved to be an endometrioma histologically. Most possibly, the presence of old blood within the tumor simulated a solid component. The patient was vigorously reassured and hormone replacement therapy was given in the postoperative follow up period.