EP26.05: Accuracy of transvaginal sonography in a series of patients operated of endometriosis

Abstract

To determine the accuracy of transvaginal sonography (TVS) in pre-surgery evaluation of endometriosis. Taking into account the consensus opinion from the International Deep Endometriosis Analysis (IDEA) group, we performed a retrospective study collecting data from TVS exams carried out on 32 female candidates prior to the surgical procedure for endometriosis. Four specialised sonographers performed exams; the average time between ultrasound and surgery was 4'8 months. We evaluate the presence or the absence by TVS of endometrioma and deep infiltrating endometriosis (DIE) in anterior compartment and posterior compartment: rectovaginal septum (RVS), posterior vaginal fornix (PVF), uterosacral ligament (USL), rectosigmoid (RS) and Pouch of Douglas obliteration (POD obliteration). Data was assessed and compared with surgical and histological findings by calculating sensitivity, specificity and accuracy. Due to lack of data, DIE lesions in anterior compartment, RVS and PVF were collected but not evaluated. 32 women, average age of 36,2 years old, underwent TVS and surgery for endometriosis. The sensitivity, specificity and accuracy of TVS for the diagnosis of endometrioma and DIE were 91% (95%CI 76-100), 79% (95%CI 37-100), 84% (95%CI 70-98) and 75% (95%CI 46-100), 95% (95%CI 83-100), 87,5% (95%CI 74-100), respectively. In 30% of endometriomas TVS revealed association with DIE. Results concerning DIE and POD obliteration are expressed in table1. TVS is an accurate and non-invasive test for detection and pre-surgical description of endometriomas and DIE, contributing to the management plan for surgery. Our results resemble those published in prospective studies. Further evaluation of data in our centre would be necessary in order to obtain more valuable outcomes. EP26.05: Table 1. Sensitivity, specificity and accuracy values for DIE and POD obliteration