http://www.niams.nih.gov/Health%5FInfo/Bone/Pagets/default.asp
NIH Osteoporosis and Related Bone Diseases ~ National Resource Center
This fact sheet provides information about Paget’s disease, a chronic disorder that can result in enlarged and misshapen bones. The excessive breakdown and formation of bone tissue causes affected bone to weaken – resulting in bone pain, misshapen bones, fractures, and arthritis in the joints near the affected bones. Related information includes symptoms, diagnosis, prognosis, treatment, and more.