Circummarginate placenta

Last revised by Dr Jeremy Jones on 20 Sep 2021

Circummarginate placenta is an uncommon variation in placental morphology. The chorionic membranes insert inward from the margin of placental edge, similar to circumvallate placenta, but unlike circumvallate placenta, the placental edge is not thickened and rolled up, and there is no central depression.

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