Normally, the placenta is attached to the uterus away from the cervix. When the placenta blocks the cervix, it is called placenta previa. The amount of cervix covered by the placenta may be slight (marginal), moderate (partial), or complete (total). This picture shows a complete placenta previa.
ByHealthwise Staff Primary Medical ReviewerSarah Marshall, MD - Family Medicine Specialist Medical ReviewerWilliam Gilbert, MD - Maternal and Fetal Medicine
Current as ofNovember 14, 2014
WebMD Medical Reference from Healthwise
November 14, 2014
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