LOW-GRADE OSTEOSARCOMA OF METACARPAL BONE

A radiograph of the second left metacarpal bone in a 34-year-old man s howed irregular lytic areas in the diaphysis that was expanded with pe rpendicular periosteal reactions. Examination of the first biopsy spec imen indicated a fibrous dysplasia, Examination of the second biopsy s pecimen revealed an unequivocal grade I intramedullary osteosarcoma, d esmoid to fibrous dysplasia-like in histological pattern. Three years after an adequate en bloc resection of the metacarpal bone, the man wa s healthy. The long-term course is usually favorable. (C) Elsevier Sci ence Inc., 1996.