UFE is effective regardless of the size, number and location of uterine fibroids, and this is one of its most important advantages over myomectomy. Besides, after a successful UFE, fibroids are unlikely to recur while after myomectomy, remaining unnoticed fibroids can grow later and cause problems. UFE is effective in any fibroid size. However, it is generally accepted that fibroids smaller than 10cm in diameter will shrink more rapidly after UFE than larger fibroids. And finally, UFE is effective in fibroids of any location in the uterus. However, pedinculated (attached to the uterus with a thin neck) subserosal and submucosal fibroids may detach from the uterus after UFE and cause problems.