the tumours were classified histologically as osteosarcoma ( 5 osteoblastic , 6 mixed type and 1 fibroblastic ) , chondroma ( 2 ) , chondromyxoid fibroma ( 1 ) , chondrosarcoma ( 1 ) and periosteal fibroma ( 1 ) .
C0016030
fibroblastic
C0334455
periosteal fibroma