OP24.10: Prevalence of congenital uterine anomalies in a consecutive series of rectosigmoid DIE

To evaluate the prevalence of congenital uterine anomalies (ESHRE – ESGE classification) by 3D-TVS in a consecutive series of fertile women with recto-sigmoid deep infiltrating endometriosis (DIE). 223 consecutive patients with recto-sigmoid DIE were prospectively enrolled for a longitudinal observational study during 01.01.2006 – 30.12.2015. All patients underwent 3D-TVS, performed with the GE Voluson 730 and E8 units, using a wide-band 3–9 MHz transducer. Compound Resolution Imaging (CRI) and Speckle Reduction Imaging (SRI) technologies were used to optimise image before volume acquisition by enhancing contrast resolution and reducing artefacts and speckle. Multiplanar display and Volume Contrast Imaging (VCI) analysis (by two millimetres slices) were used to re-analyse the stored 3D volumes. Mean age was 35 years (SD ± 6). Mean BMI was 22 kg/m2 (SD ± 3). 160 (72%) patients were nulliparous, 50 (23%) infertile. 182 (82%) patients had a multi-organ abdomino-pelvic disease (2 sites 39%, 3 sites 32%, >3 sites 11%). 3D stored volumes were available for 105 patients. An ESHRE - ESGE normal (class U0), T-shaped (class U1a) and sub-septate uterus (class U2a) was found in 83 (79%), 16 (15%) and 6 (6%) patients, respectively. Some of the patients had a history of repeated ART cycle failures and repeated pregnancy losses, not investigated for congenital uterine anomalies. 3D-TVS by VCI analysis can adequately permit to properly assess uterine morphology. Congenital uterine anomalies showed a high prevalence in patients with recto-sigmoid DIE, up to 21%. All infertile patients with recto-sigmoid DIE should undergo 3D-TVS to assess uterine morphology in the coronal plane.