This is a report of 23-year-old male with multiple sclerosing osteogenic sarcoma found during hospitalizationafter trauma. The multiple osteogenic sarcoma involved most of axial skeletal bones including skull, cervicalvertebrae, scapula, sternum, lumbar vertebrae, pelvic bone and sacrum ans well as soft tissue. Careful historytaking, physical examination, radiological examination and morbid histological study disclosed that the tumorappeared to be a primary multiple osteogenic sarcoma developed simultaneously at multiple foci and than metastaticones.