[The role of radiotherapy in combined treatment of chondrosarcoma of the bone].

A retrospective analysis of 32 cases of chondrosarcoma of the bone treated by radiotherapy between 1966 and 1986 is presented. In all cases the disease was histologically confirmed. With respect to the known prognostic factors this group of patients was infavourable (75% in the trunk and the head; 69.5% with high histologic grad; 87.5% of high local aggressiveness; the wean patients' age was 37.9 years). Thirteen patients were preoperatively irradiated, 8 postoperatively and 11 received radiotherapy after the biopsy. The treatment was radical (symptomatic relief only) in 9 cases. After the treatment 30 patients were on follow-up from 4-274 months (Me = 60.8m.). According to the local control 9 patients responded to therapy (30.0%). The survival rate was 26.6% and disease-free survival rate was 20.0%.