Leiomyomas, also known as uterine fibroids, are benign tumors that originate from the smooth muscle tissue of the uterus. They are very common and can vary in size, number, and location within the uterus. Symptoms may include heavy menstrual bleeding, pelvic pain, frequent urination, and reproductive challenges. Treatment options range from watchful waiting and hormonal therapy to surgical procedures like myomectomy or hysterectomy.