Five Cases of Benign Chondroblastoma

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Five cases of benign chondroblastoma were presented in this report. Three cases had tibial involvement, talus and pubis was also affected in each one case. Four males and one female. The age range was 12 to 28 years.Histologically, tumors were consist of oval chondroblasts and giant cells with cartilage matrix, stained slightly with Alcian blue.The ultrastructures of chondroblast and cartilage matix were studied utilizing TEM and SEM. The well developed and sometimes dilated endoplamic reticulums and filaments in the cytoplasm were characteristic and also, protein-mucopolysaccharide was detected by PAM staining. By energy dispersive analysis of X-ray, apatite clusters with 0.5 to 0.8μ in diameter in tumor matrix showed a little different patterns of Ca, P and S from the epiphyseal cartilage matrix.
西日本整形・災害外科学会の論文