Placental gross / microscopic abnormalities, nonneoplastic
Circummarginate placenta

Author: Mandolin Ziadie, M.D. (see Authors page)

Revised: 12 October 2017, last major update September 2011

Copyright: (c) 2002-2017,, Inc.

PubMed Search: Circummarginate placenta

Cite this page: Ziadie, M. Circummarginate placenta. website. Accessed November 21st, 2018.
Definition / general
  • Insertion of the membranes away from the placenta without a distinct ridge at the point of insertion
  • More common in multigravid pregnancies
Gross description
  • Like circumvallate placentas, the point of membrane insertion is inside the edge of the disc
  • However, no firm ridge at the site of insertion is present
  • Margin is thin and flat