A case of pulmonary benign metastasizing leiomyoma in a 48 years old female is presented. The histological study showed pulmonary nodules formed by smooth muscle cell of benign appearance. The 8 years follow up revealed a patient in a good fashion without respiratory symptoms. There was a 4 years history of previous hysterectomy due to multiple uterine leiomyomas. A clinico pathological review of the classical and unusual forms of smooth muscle tumors of the uterus is also presented.