Abstract：【Objective】To explore the prenatal ultrasound characteristics and outcomes in the diagnosis of fetal imperforate hymen. 【Methods】 All data of 5 cases with fetuses diagnosed congenital imperforate hymen from January 2018 to July 2020 in our hospital were retrospectively analyzed for the characteristics of ultrasound and clinical outcomes. 【Results】The main echocardiographic features of congenital imperforate hymen were a thick-walled cystic mass behind the female fetus's bladder, with clear boundaries and irregular hyperechoic spots freely float in it. Color Doppler blood flow imaging showed no obvious blood flow signal. From this retrospective analysis, 5 congenital imperforate hymens were identified in the diagnosis of fetuses. Of which 3 cases combined with other abnormalities (1 case had left kidney polycystic renal dysplasia, 1 case had unilateral kidney absent, double inferior vena cava and single umbilical artery, 1 case had right kidney absent) and confirmed by autopsy. And 2 live births were confirmed by ultrasound, CT or MRI (Hydronephrosis and multiple kidney stones were found in 1 case after birth). Both cases underwent hymenotomy. After the milky white thick liquid was drained, the mass disappeared and the uterus moved down to the normal position. Both live-born infants had a good prognosis. 【Conclusion】Prenatal ultrasound can find congenital imperforate hymen in time and effectively, and provide important information for clinical treatment and follow-up.
2021, Vol. 38 
