The role of diagnostic hysteroscopy in diagnosis of incomplete uterine septum in patients with recurrent pregnancy loss in the era of transvaginal 3D ultrasound scan

Purpose To determine the accuracy of transvaginal 3D ultrasound scan (TV 3D US) in detecting partial septate uterus (PSU) in patients with recurrent pregnancy loss (RPL). Methods This retrospective study included 113 patients with an initial diagnosis of unexplained RPL, who were subsequently found to have PSU on diagnostic hysteroscopy and who had TV 3D US prior to surgery. The diagnosis of PSU was made at the time of a diagnostic hysteroscopy based on ESHRE-ESGE classification of Müllerian anomalies. Based on hysteroscopic findings, patients were divided into two groups: those with PSU and a central point of indentation at an acute angle