Lesions commonly in the pelvis and central skeleton
Occurs in patients over 40 years-old with a male predominance
Often will present with local swelling and pain or a pathologic fracture
Very slow growing tumors
Chondrosarcoma
Multiple myeloma
Osteosarcoma
Ewing sarcoma
Paget disease
Myositis ossificans
Ganglion cyst
Adamantinoma