Gross/Macroscopic Variations and Conditions
Variations in Size and Shape
Bilobate placenta

Topic Completed: 1 September 2011

Minor changes: 28 October 2020

Copyright: 2002-2020,, Inc.

PubMed Search: Bilobate placenta

Mandolin S. Ziadie, M.D.
Page views in 2019: 391
Page views in 2020 to date: 398
Cite this page: Ziadie MS. Bilobate placenta. website. Accessed November 30th, 2020.
Definition / general
  • Two lobes of equal size, separated by fetal membranes or connected by narrow isthmus of placental tissue
  • Umbilical cord inserts in the membranes between the two discs and is at risk for rupture
  • If incompletely removed, there is a risk of maternal postpartum hemorrhage
Gross description
  • Two lobes of equal size separated by membranes
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