Fibroids (Leiomyoma) are abnormal fibrous tissue growths that occur in the uterus. They are fairly common, occurring in women as young as early 20s through menopause. It is believed that 1 in 3 women have fibroids. Many women are not aware that they have them as they do not have symptoms. Fibroids are not cancerous but can be life threatening if they cause excessive bleeding or get large enough to cause obstruction of the ureters which in turn can cause kidney failure.