“…Radiographically, the tumors may be lytic, sclerotic, or mixed; disruption of the cortex is an important clue to diagnosis 25 . Bone scans and bone biopsy can be helpful in diagnosis 13,14 . The high incidence of pathologic fracture through the tumor site, or a rapid rise in the serum alkaline phosphatase level (both claimed to be common in earlier reports) were not confirmed in the report on the largest series of these patients 25 .…”