Cite this page: Ziadie MS. Circummarginate placenta. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/placentacircummarginate.html. Accessed June 1st, 2020.
Definition / general
- Insertion of the membranes away from the placenta without a distinct ridge at the point of insertion
- More common in multigravid pregnancies
- 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