What is the most common primary malignant bone tumor in adults?
Multiple myeloma is the most common primary malignant bone tumor in adults, usually occurring in patients older than 40 years of age. Multiple myeloma represents approximately 1% of all malignant diseases and about 10% to 15% of hematologic malignancies. The excessive proliferation of abnormal plasma cells can result in the formation of a single lesion (plasmacytoma) or multiple lesions (multiple myeloma).
