Abstract

Low-lying placentas, placenta previa and abnormally invasive placentas are the most frequently occurring placental abnormalities in location and anatomy. These conditions can have serious consequences for mother and fetus mainly due to excessive blood loss before, during or after delivery. The incidence of such abnormalities is increasing, but treatment options and preventive strategies are limited. Therefore, it is crucial to understand the etiology of placental abnormalities in location and anatomy. Placental formation already starts at implantation and therefore disorders during implantation may cause these abnormalities. Understanding of the normal placental structure and development is essential to comprehend the etiology of placental abnormalities in location and anatomy, to diagnose the affected women and to guide future research for treatment and preventive strategies. We reviewed the literature on the structure and development of the normal placenta and the placental development resulting in low-lying placentas, placenta previa and abnormally invasive placentas.

Original languageEnglish
Pages (from-to)983-993
Number of pages11
JournalActa obstetricia et gynecologica Scandinavica
Volume99
Issue number8
DOIs
Publication statusPublished - 1 Aug 2020

Keywords

  • abnormally invasive placenta
  • low-lying placenta
  • placenta
  • placenta previa
  • placental abnormalities

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