M90.6: Osteitis deformans in neoplastic disease

Osteitis deformans, also known as Paget's disease of the bone, is a chronic condition in which your body's normal bone recycling process is disturbed. In this condition associated with neoplastic disease, meaning a condition where tumors (neoplasia) are present, the affected bones become enlarged and deformed. Symptoms often include bone pain, joint pain, and bone fractures. It might affect any bone in the body, but it's commonly seen in the spine, pelvis, skull, or legs. The disease progression can lead to complications such as hearing loss if the skull is affected or heart failure due to an increase in blood vessels in these deformed bones. This specific form of the disease suggests an underlying cancer or tumor, which might be contributing to the abnormal bone transformation.