- Diff Dx: Peak Age
- Metastatic Wilm's tumor infants and young children
- Osteomyelitis first decade and then levels off
- Eosinophilic granuloma children and young adolescents
- Osteofibrous dysplasia children and young adolescents
- Ewing's sarcoma children to young adults
- Non-ossifying fibroma older children and adolescents
- Unicameral bone cyst older children and adolescents
- Aneurysmal bone cyst older children and adolescents
- Enchondroma appears uncalcified in 1st and 2nd decades
- Chondroblastoma older children to young adults
- Chondromyoid fibroma older children to young adults
- Osteoblastoma older children to young adults
- Giant cell tumor adolescents to middle age
- Adamantinoma adolescents to young adults
- Sarcoma of Bone middle age
- Brown tumor adulthood
- Myeloma middle age to elderly
- Metastaic carcinoma middle age to elderly