Benign<unk>  that is locally aggressive causing osteolytic destruction
Although classified as benign lesions, metastasis does occur in a small percentage of patients, typically to lungs
These are known as benign pulmonary implants as they do not carry the same poor prognostic implication as lung metastasis from other malignancies
3% to 5% of all primary bone<unk> s
Around 20% in the Chinese population
Increased incidence in patients who have been diagnosed with Paget disease of the bone
These are known as benign pulmonary implants as they do not carry the same poor prognostic implication as lung metastasis from other malignancies
Around 20% in the Chinese population
Giant cell tumor
Multiple myeloma
Ganglion cyst
Chondrosarcoma
Eumycetoma
Paget disease
Neuroblastoma 
Osteosarcoma