Angiosarcoma is a rare tumor, and it is highly unusual for it to appear in bone as a primary lesion. Review of literature revealed that 38 such lesions have bsen recorded since 1925, when Codman wrote that they had as yet registered no case which could be considered a typical angiosarcoma prior to that date. Recently we encountered one tumor developed in the distal end of a clavicle which was confirmed as angiosarcoma by pathologic study. This case is presented with a review of literature.