<prompt> Precancerous lesion of bone among the following isPaget diseaseChronic osteomyelitisBenign giant cell tumorAll of the above  <response>: Precancerous lesions of bone:Multiple exostosesOlliers diseaseBenign giant cell tumorOsteoblastomaChondroblastomaChronic osteomyelitisPagets diseaseRefer: Nelsons Textbook of Pediatrics, SAE, 1st edition, pg no. 2474 