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Leiomyoma is a rare benign neoplasm composed of smooth musc¬le; it occurs mostly in the uterine corpus but may also be encoun¬tered frequently in the wall of the alimentary tract and tracheob¬ronchial tree. A 66-year-old Caucasian woman presented with hemoptysis of ten days duration and progressive dyspnea. The chest roentgenogram revealed multi-cavitary lesions. The patho¬logical examination of bronchoscopic biopsy revealed spindle cell proliferation. The immunohystochemical examination de-monstrated great positivity with actin leading to the diagnosis of benign metastasizing leiomyoma.