Uterine lipoleiomyoma: a benign entity with malignant transformation potential?

Background: Uterine lipoleiomyoma is a rare lipomatous variant of uterine leiomyoma composed of a variable mixture of mature smooth muscle cells and adipocytes, typically found in peri or postmenopausal women. Malignancies arising from the tumor have rarely been reported though it is considered benign. Cases : We present three cases of uterine lipoleiomyoma and review literature to explore its etiology, characteristics, diagnosis and malignant transformation potential. Conclusion : Imaging examinations especially magnetic resonance imaging (MRI) play an important role in preoperative diagnosis. For large size and rapid growth of lipoleiomyoma, malignant transformation potential should be considered and surgery is required. Follow-up is still necessary.