Prenatal diagnosis and postnatal outcome of type III vasa previa: systematic review of literature.

The prenatal diagnosis of VP type III is challenging with few cases reported in the literature; however, it minimizes the risks of an adverse outcome with intact membranes early-term elective cesarean delivery. Since clinical manifestations and risk factors are not specific, and type III VP cannot be excluded when there is a normal cord insertion or just one placental mass, a generalized screening by transvaginal ultrasound in the general population is recommended, particularly in presence of low-lying or morphologically abnormal placentas and medically assisted reproduction. This article is protected by copyright. All rights reserved.