cartilage tumor cartilage tumor cartilage tumors, also known as chondrogenic tumors, are a type of bone tumor that develop in cartilage, and are divided into non-cancerous, cancerous and intermediate locally aggressive types. type of cartilage tumor name non-cancerous subungal exostosis bizarre parosteal osteochondromatous proliferation periosteal chondroma enchondroma osteochondroma chondroblastoma chondromyxoid fibroma osteochondromyxoma locally aggressive chondromatosis atypical cartilaginous tumor cancerous (chondrosarcoma) conventional chondrosarcoma grade i-iii clear cell chondrosarcoma mesenchymal chondrosarcoma dedifferentiated chondrosarcoma