Abnormally shaped placentae in twin pregnancy

Abstract

Succenturiate lobes of placenta were more common in twin pregnancies compared with singleton pregnancies. However, the presence of abnormally shaped placentae does not seem to affect perinatal outcomes in twin pregnancies.

Prenatal diagnosis and management of vasa previa in twin pregnancies: a case series and systematic review

“…4,6-8, 29,38 The incidence of succenturiate lobes and other morphological placental anomalies is higher in twin pregnancies. 1,11,39,40 A VCI of one of the umbilical cords is eight times more common in twins than in singletons. 39 The odd ratio for VP in pregnancies presenting with a bilobated placenta or with succenturiate lobe has been evaluated to be 22.11 in twin pregnancies.…”

“…1,11,39,40 A VCI of one of the umbilical cords is eight times more common in twins than in singletons. 39 The odd ratio for VP in pregnancies presenting with a bilobated placenta or with succenturiate lobe has been evaluated to be 22.11 in twin pregnancies. 39 Five of the seven cases of our series (Table 1) and five out of the eight cases described in details in the literature (Table 3) presented with a VCI.…”

“…39 The odd ratio for VP in pregnancies presenting with a bilobated placenta or with succenturiate lobe has been evaluated to be 22.11 in twin pregnancies. 39 Five of the seven cases of our series (Table 1) and five out of the eight cases described in details in the literature (Table 3) presented with a VCI. One cases in our series and three in the literature also presented a low-lying placenta or placenta previa.…”

Two placentas in singleton pregnancy with fused umbilical cord: A case report

“…In this present case, vanishing twin syndrome may attribute to this two placentas. However, the diagnosis of succenturiate lobes of placenta requires the additional placental lobe that is much smaller than the largest lobe of placenta macroscopically and the presence of subchorionic vessels between the main placental disk and the accessory lobe confirmed by placental pathologist [2,7]. In this case, the placentas were almost equal in size and placed on both anterior and posterior portion of the uterus.…”

“…Thus, trophotropism may result in a separated, . Suzuki et al [7] reported that the incidence of succenturiate lobes of placenta in twin pregnancies was significantly higher than that in singleton pregnancies. Furthermore, in their earlier study with singleton pregnancies, Suzuki and Igarashi [8] also reported the frequency of maternal age >35 years and history of infertility using IVF in patients complicated by succenturiate lobes of placenta were significantly higher than those without succenturiate lobes of placenta.…”