Epiphysial chondroblastoma of bone. A clinico-pathological study of sixty-nine cases.

Epiphysial chondroblastoma is the name proposed by one of us (1947) for the relatively rare tumour designated by Jaffe and Lichtenstein in 1942 as “benign chondroblastoma of bone” and formerly identified as a “giant-cell tumour” variant (Kolodny 1927, Ewing 1928, Codman 1931). Johnson (1963) actually still classifies this lesion as “enchondromatous giant-cell tumour”. Notwithstanding that its pathogenesis is still disputed, the significant clinical features, such as the predilection for adolescents in the second decade, and the characteristic radiographic picture showing a well limited osteolytic area with foci of mottled calcification, located in the great majority of cases in the epiphysis of a long bone, usually