M Pozzoni, C Sammaria, R Villanacci, C Borgese, F Ghisleri, A Farina, M Candiani, P I Cavoretto
OBJECTIVE: Vasa previa (VP) is a condition characterized by fetal blood vessels located on the amniotic membranes and outside the placenta, within 2 cm from internal os. The most common forms of VP are associated to velamentous cord insertion (type I) or to bilobed-succenturiate placenta (type II), located across the cervix. A rare form of VP, not necessarily associated to other placental or vascular anomalies, involves aberrant vessels running from the placenta to the amniotic membranes, nearby the internal os, and then turning back to the placenta (type III)...
July 20, 2023: Ultrasound in Obstetrics & Gynecology