BONE LOCATION Multiple lesions in Young Patient EGFibrous dysplasiaLeukemiaLymphomaHemangioendotheliomaEnchondroma / Olliers / Marfucci'sOsteochondroma / MHENOF / Jaffe-Campanacci syndrome Multiple lesions in Older Patient Paget'sMetastatic bone diseaseMultiple myelomaLymphoma HyperparathyroidismBone infarcts Epiphyseal / Subchondaral Lesions ChondroblastomaGiant cell tumorClear cell chondrosarcoma Surface Lesions Osteochondroma / MHE Parosteal osteosarcomaPeriosteal osteosarcoma Periosteal chondroma Post Traumatic Surface Lesions Florid reactive periostitisBPOPTurret exostosisSubungal exostosis BODY LOCATION Sacrum in young patients (10-40) Giant cell tumorABCEwing'sOsteosarcoma Sacrum in older patients (40-80) ChordomaMetastasisMyelomaLymphomaChondrosarcomaMFH Tibial lesions AdamantinomaOsteofibrous dysplasiaFibrous dysplasiaOsteomyelitis Hand and Foot Intramedullary destructive lesions EnchondromaGiant cell tumorABCGiant cell reparative granuloma Metastatic carcinoma (only in older patients)