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Fibroids During Pregnancy

by Lara A. Friel, MD, PhD

Fibroids in the uterus (see Fibroids), which are relatively common noncancerous tumors, may increase the risk of preterm labor, abnormal presentation of the fetus, a mislocated placenta (placenta previa), and repeated miscarriages. Rarely, fibroids interfere with the movement of the fetus through the vagina during labor.