Low-Lying Placenta

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Topic Overview

During pregnancy, theplacentais normally attached to the upper wall of theuterus. A placenta that forms low in the uterus without overlapping thecervicalopening is referred to as a low-lying placenta. It is not a high-risk condition. It often gets better on its own as the pregnancy progresses.

If you have a low-lying placenta early in pregnancy, there is a good chance that it will get better on its own. As the lower uterus enlarges, the placenta's relative position will shift away from the cervix.

But when the placenta does overlap the cervix, it is calledplacenta previa. Placenta previa can bleed heavily during labor. The good news is that about 90% of cases diagnosed before the 20th week no longer overlap the cervix by the end of the pregnancy.footnote 1

Related Information

References

Citations

  1. Williams DE, Pridjian G (2011). Obstetrics. In RE Rakel, DP Rakel, eds., Textbook of Family Medicine, 8th ed., pp. 359-401. Philadelphia: Saunders.

Credits

ByHealthwise Staff
Primary Medical Reviewer Sarah A. Marshall, MD - Family Medicine
Adam Husney, MD - Family Medicine
Kathleen Romito, MD - Family Medicine
Specialist Medical Reviewer Rebecca Sue Uranga, MD - Obstetrics and Gynecology

Current as ofNovember 21, 2017