EP31.13: Prevalence of ovarian endometrioma associated with deep endometriosis

To verify the prevalence of ovarian endometrioma associated with deep endometriosis, and to identify what sites were most affected by deep endometriosis associated with endometrioma. A retrospective study was conducted comprising 245 women (mean age 31 years old (range 19-44 years) with suspected deep endometriosis who underwent transvaginal ultrasonography with bowel preparation from January 2016 to January 2019. A single experienced examiner performed all examinations. We found 49.3% of ovarian endometrioma associated with deep endometriosis. Regarding location of the ovarian endometrioma, 31.4% were on the left side, 47.9% bilaterally and 20.7% on the right. When we analysed the size, 71.95% had more than 4 cm. The sites most affected by the association were the uterosacral ligaments (81.6%), the rectosigmoid region (48.9%) and the retrocervical region (30.6%) (table 1). Analysing the Pouch of Douglas blockage and presence of ovarian endometrioma, we found a prevalence of 20% and 34% of adherence syndrome. The prevalence of ovarian endometrioma associated with deep endometrioses was 49.3%. The sites most affected are uterosacral ligaments (81.6%), rectosigmoid region (48.9%) and retrocervical region (30.6%). EP31.13: Table 1. Endometriosis phenotype associated with ovarian endometrioma