About Two Cases of Uterine Smooth Muscle Tumor of Uncertain Malignant Potential

Uterine smooth muscle tumor of uncertain malignant potential (STUMP) is a rare tumor. They are classified as benign leiomyoma and malignant leiomyosarcoma regarding presence of tumor cell necrosis, cytological atypia and mitotic activity. STUMP is regarded in World Health Organization (WHO) classification as smooth muscle tumors between benign and malignant criteria. STUMP is seen mostly in age of mid-forties, who has been operated with preoperative leiomyoma diagnosis. Risk factors and prognosis are not fully understood, but in long-term follow-up, there is a potential of recurrence or metastasis.