The term smooth uterine muscle of uncertain malignant potential (STUMP) indicates a group of uterine smooth muscle tumors (SMTs) that cannot be diagnosed unequivocally as benign or malignant. Diagnosis, surgical management, and follow-up of this neoplasm remain controversial, especially in pre-menopausal women with fertility desire, due to the non aggressive behaviour and prolonged survival rate when compared to leiomyosarcomas. Studies of STUMP are limited in population and rarity results in few analysis of its fertility outcomes and oncologic prognosis. STUMP has a lower tumor growth rate and recurrence is often delayed by years after initial event compared to high grade leiomyosarcomas which have an aggressive clinical course and behavior thus making it very important to differentiate stump from leiomyosarcomas .Recurrencerate ranges from 8.7% to 11%.