Uterine leiomyoma, also known as uterine fibroids, are benign growths of the smooth muscular tissue of the uterus, according to Mayo Clinic. Uterine leiomyoma normally occur during childbearing years and very rarely develop into cancer.
Up to 75 percent of women develop uterine fibroids at some point in their lifetimes, explains Mayo Clinic. Usually they cause no symptoms. For women who do have symptoms, the most common are heavy bleeding during menstruation, pelvic pressure or pain, and frequent urination. Uterine leiomyoma usually do not result in any pregnancy complications; however, it is possible for them to prevent implantation and growth of embryos. Therefore, doctors recommend removing uterine fibroids before attempting to get pregnant.