Histogenesis
Benign
Intermediate (locally aggressive and/or rarely metastasizing)
Malignant [low-grade lesions if not dedifferentiated]
Fibrogenic and fibrohistiocytic
Histiocytic fibroma
Desmoplastic fibroma
Fibrosarcoma
Benign fibrous histiocytoma
Chondrogenic
Osteochondroma
Chondromyxoid fibroma
Chondrosarcoma grade 2
Hemimelic epiphyseal dysplasia
Chondrosarcoma grade 3
Enchondroma
Chondrosarcoma grade 1
Dedifferentiated chondrosarcoma
Periosteal chondroma
Mesenchymal chondrosarcoma
Osteochondromyxoma
Chondroblastoma
Peripheral chondrosarcoma
Subungual exostosis
Periosteal chondrosarcoma
Bizarre parosteal osteochondromatous proliferation