Uterine fibroids are noncancerous growths of the uterus that often appear during childbearing years. They may be caused by genetic changes in normal uterine muscle cell and an increase in estrogen and/or progesterone production among other growth factors.
Symptoms include heavy menstrual bleeding, menstrual periods lasting more than a week, pelvic pressure of pain, frequent urination, difficulty emptying the bladder, constipation, backache or leg pains.
Although uterine fibroids are not usually dangerous, they can cause discomfort and may lead to complications such as anemia from heavy blood loss. They are not associated with an increased risk of uterine cancer and almost never develop into cancer.
Uterine Fibroids. Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/uterine-fibroids/symptoms-causes/syc-20354288.