https://www.selleckchem.com/pr....oducts/trc051384.htm
A classification termed umbilical-portal-systemic venous shunt (UPSVS) for an abnormal umbilical vein (UV), portal vein (PV), and ductus venosus (DV) was proposed recently. According to this classification, there are 3 types of UPSVSs types I, II, and III. Trisomy 21 associated with UV-PV-DV anomalies has been described, but the incidence of trisomy 21 in UPSVS cases, the relationship between UPSVS types and trisomy 21, and the pregnancy outcome are poorly documented. This study aimed to address these issues. All UPSVS cases diagnosed
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