Journal of Ultrasound in Medicine, Vol 13, Issue 5 399-401, Copyright © 1994 by American Institute of Ultrasound in Medicine
Natural history of uterine leiomyomas in pregnancy
N. Strobelt, A. Ghidini, M. Cavallone, I. Pensabene, P. Ceruti and P. Vergani
Department of Obstetrics and Gynecology, University of Milan, Ospedale S. Gerardo, Monza, Italy.
A prospective study was conducted over a 6 year period to determine the
natural history of uterine leiomyomas in pregnancy. All pregnant women with
myomas detected during obstetric ultrasonographic examination and with
three or more sonographic examinations were included; 134 patients
fulfilled the inclusion criteria. Sonograms were obtained at 2 week
intervals until 20 weeks of gestation, and monthly thereafter. The
following observations were made: (1) the majority of myomas 5 cm or less
in average diameter could no longer be seen during pregnancy; (2) the
majority of myomas greater than 5 cm in diameter tended to remain stable or
decrease in size during pregnancy; and (3) multiple myomas were less likely
to disappear than solitary myomas.