HEMANGIOMAS occur in practically all visceral and somatic elements of the body and numerically are common tumors,1but when they occur in skeletal muscles, they are uncommon tumors, as evidenced by Watson and McCarthy's report of only 10 cases among 1,308 hemangiomas studied.2Shallow and co-workers collected 335 cases of hemangioma of skeletal muscles from the world literature up to 1944.3Of these, 39 involved the muscles of the thoracic wall; most of these tumors were small and involved only one muscle. Elkin and Cooper reported 19 cases of large hemangiomas, 3 of which involved various muscles of the chest wall.4Two of these tumors were completely excised; the third, only partially because of its extent. Dumbbell tumors of the mediastinum and spinal cord make up a small percentage of all spinal-cord tumors. The great majority of these have their origin in nerve tissue. Heuer studied 64 dumbbell tumors, 43% of which