Prognosis
The outlook is generally good, particularly if treatment is given before major changes in the affected bones have occurred. Any bone or bones can be affected, but Paget's disease occurs most frequently in the spine, skull, pelvis, femur, and lower legs. In general, symptoms progress slowly, and the disease does not spread to normal bones. Treatment can control Paget's disease and lessen symptoms, but is not a cure. Osteogenic sarcoma, a form of bone cancer, is an extremely rare complication that occurs in less than one percent of all patients.
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