Various problems were discussed in the treatment of benign aggressive tumors about joints such as giant cell tumor of bone (GCT), benign chondroblastoma (CB), desmoplastic fibroma and extraabdominal desmoid. A singnificant correlation between the therapeutic procedures and recurrence of GCT was found, but no pathological features were significantly correlated. Local recurrence could not be predicted on the basis of histological grading. Excision or block resection should be performed as the initial treatment. Other tumors but CB similaly should be treated by resection.
