Umbilical cord
Velamentous insertion

Topic Completed: 1 November 2011

Minor changes: 20 February 2019

Copyright: 2002-2019,, Inc.

PubMed Search: Velamentous insertion[title] umbilical cord

Mandolin S. Ziadie, M.D.
Page views in 2019: 996
Page views in 2020 to date: 555
Cite this page: Ziadie MS. Velamentous insertion. website. Accessed July 13th, 2020.
Definition / general
  • Insertion of umbilical cord into extraplacental membranes, with intramembranous portions of vessels exposed to possible trauma / rupture
  • Occurs in 1% of placentas
  • Associated with twin gestations, congenital malformations, maternal smoking and single umbilical arteries
  • Poses a risk for vascular compression, trauma and thrombosis with associated risks of fetal morbidity and mortality
Gross images

Images hosted on other servers:

Velamentous insertion of umbilical cord

Back to top