Uterine fibroids, also known as uterine leiomyomas, are non cancerous growth that occurs in the female reproductive system during the childbearing years. They usually go unnoticed as they do not show any significant symptoms for quite some time. They are benign, compact tumours made of smooth muscle cells and fibrous connective tissues. They vary in their sizes from being extremely small to being so large of being capable of enlarging the uterus.