Uterine Leiomyomas and Reproduction.

There is a prevailing opinion by gynecologists, much of it based on expert opinion or anecdotal evidence, that myomas are detrimental to pregnancy. Newer data challenge much of this dogma, but incorrect assumptions remain. Although not impeccable, multiple data address the correlation between myomas and reproduction, and some emerging evidence addresses surgical removal of these myomas and subsequent outcomes. A thorough literature search was performed, and the amassed data were analyzed to answer some of our most important queries about the role that myomas play in pregnancy and delivery. Uterine leiomyomas ultimately decrease in size during late pregnancy and postpartum. Spontaneous abortion rates are similar in women with and without leiomyomas. The data addressing leiomyoma effects on preterm prelabor rupture of membranes, placental abruption, cesarean delivery, and postpartum hemorrhage rates are conflicting, but the best evidence does not show a significant correlation compared with women without myomas. Preterm delivery rates are elevated in women with leiomyomas. Myomectomy does not decrease preterm deliveries and may increase this risk. Women with myomectomies have increased elective cesarean delivery rates and more blood loss at delivery compared with women with leiomyomas in situ.