OP 31.05: Accuracy of transvaginal three‐dimensional ultrasound in diagnosis of congenital uterine anomalies

Women with congenital uterine malformation usually have higher incidence of infertility or miscarriage. It is difficult to diagnose and classify uterine malformations accurately by conventional two-dimensional ultrasound. In this study, patients with suspected congenital uterine malformation were examined by three-dimensional ultrasound and the sonographic features of various types of uterine anomalies were illustrated. Our aim was to explore the diagnostic value of three-dimensional sonography for congenital uterine abnormalities. A total of 1517 infertility patients suspected of uterine malformations were collected from July, 2008 to December, 2013 in our hospital. By applying Voluson E8 three-dimensional volume scanner, sagittal plane, transverse plane, coronal plane and reconstructed imaging of surface mode of three-dimensional ultrasound were acquired. Of 1284 uterine malformation patients, 580 cases performed hysteroscopy. Three-dimensional ultrasound results were compared with that of hysteroscopy to evaluate the sensitivity of three-dimensional sonography. One thousand two hundreds and eighty four cases with congenital uterine abnormality were diagnose by three-dimensional ultrasound. Among them, 634 cases were diagnosed as subseptate uterus, 271 cases as complete septate uterus, 212 cases as single horn uterus, 62 cases as didelphia, 25 cases as bicornate uterus and 80 cases as arcuate uterus. Of 580 uterine malformation patients verified with hysteroscopy, 575 cases were in accordance with three-dimensional ultrasound results, and 5 cases were misdiagnosed. Compared with hysteroscopy, the sensitivity rates of uterine malformation by three-dimensional ultrasound were 99.1%. In addition to diagnose congenital uterine anomalies, three-dimensional ultrasound is able to classify various uterine malformations according to their sonographic features, and thus play an important role in preoperative surgical planning.