Transvaginal echography in the diagnosis of localization foci of deep infiltrative endometriosis

Abstract

The goal is to assess the sensitivity and specificity of transvaginal ultrasound (USI) in the diagnosis of localization of foci of deep infiltrative endometriosis. Materials and methods. The study included 142 patients with deep infiltrative endometriosis, who underwent surgery in the surgical department of the V.I.Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology of the Ministry of Health of Russian Federation in the period 2014-2016. Criteria for inclusion in the study: informed agreement of the patient, the reproductive age (from 18 to 44 years), deep infiltrative endometriosis with a confirmed histological conclusion. Exclusion criteria were malignant tumors of the pelvis and abdomen, refusal to undergo surgical treatment of deep infiltrative endometriosis, and malformations of the urogenital system. Results. Transvaginal echography in identifying the localization of foci of deep infiltrative endometriosis is highly sensitive in the diagnosis of colorectal endometriosis (88.9%) and endometriosis of the bladder (96%) with a relatively low specificity of the study (35%). The sizes of endometrial infiltrates of the intestine, retrocervical endometriosis, and bladder intraoperatively were large in comparison with the data obtained with transvaginal ultrasound. When assessing the accuracy of the diagnostic method, it was found that transvaginal ultrasound evaluates retrocervical endometriosis with an accuracy of 41.5%, endometriosis of the intestine - 37.7%, bladder - 54.8%. Conclusion. Transvaginal echography, based on a quantitative assessment of the characteristic curve by calculating the area under it, the size of the infiltrate and their localization, showed that our study have middle diagnostic quality and visualization of DIE lesions with enough specify.