Definition: 'Placenta Circumvallata'
placenta circumvallata
Type: Term
Definitions:
1. a cup-shaped placenta with raised edges, having a thick, round, white, opaque ring around its periphery; a portion of the decidua separates the margin of the placenta from its chorionic plate; the remainder of the chorionic surface is normal in appearance, but the fetal vessels are limited in their course across the placenta by the ring.
The information shown above for placenta circumvallata is provided by Stedman's.
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Stedman's Medical Dictionary. Copyright © 2006 Lippincott Williams & Wilkins. All rights reserved.
