OC19.04: Diagnostic performance of transvaginal gray‐scale ultrasound for specific diagnosis of common benign ovarian cysts related to menopausal status

To compare the diagnostic accuracy of transvaginal ultrasound for assigning a specific diagnosis to benign adnexal masses in pre- and postmenopausal women. Prospective study comprising 2146 adnexal masses in 1980 women (1420 women premenopausal and 560 postmenopausal) diagnosed as having an adnexal mass and scheduled for surgery. All women underwent ultrasound examination prior to surgery. Specific diagnosis of presumed histology of the lesion using pattern recognition based on gray-scale ultrasound findings for benign adnexal masses (endometrioma, cystic teratoma, serous cyst, mucinous cyst, hemorrhagic cyst, hydrosalpinx, paraovarian cyst) should be established by examiners. Definitive histologic diagnosis was obtained in all cases. Sensitivity and specificity for each specific diagnosis were calculated in both pre and postmenopausal women. Sensitivity of ultrasound pattern recognition for endometrioma (88.8% vs. 67.7%), hemorrhagic cyst (47.5% vs. 0%) and hydrosalpinx (85.7% vs. 50%) was significantly higher in premenopausal women. Sensitivity for serous cyst (86.8% vs. 79.8%) was higher for postmenopausal women. There were no differences in terms of specificity. The diagnostic performance of transvaginal gray-scale ultrasound for specific diagnosis of some types of common benign cysts is different in premenopausal and postmenopausal women.