Pre-cancerous lesion of bone-
Ans. is 'd' i.e., All of above Pre-cancerous lesion of boneMultiple exostosesOllier's diseaseBenign giant cell tumorOsteoblastomaChondroblastomaChronic osteomyelitisPaget's disease
Paget disease
Chronic osteomyelitis
Benign giant cell tumor
Ail of above
Malignancies