Incidence of osteosarcoma, chondrosarcoma and Ewing's sarcoma in east Denmark: Reverse male to female ratio in osteosarcoma

The incidence of osteosarcoma, chondrosarcoma and Ewing's sarcoma was studied in east-Denmark during a 14 years period from 1983 to 1996. The population of east Denmark was 2.3 millions people. A total of 109 primary osteosarcoma, chondrosarcoma and Ewing's sarcomas were found. The mean age of the 47 patients (15 women and 32 men) with chondrosarcoma was 54 years (range 30–85 years). The mean age of the 45 patients (23 women and 22 men) with osteosarcoma was 26 years (range 6–72 years). The mean age of the 17 patients (7 women and 10 men) with Ewing's sarcoma was 19 years (range 3–33 years). The overall incidence of chondrosarcoma was 1,46/1000000 inhabitants/year. The overall incidence of osteosarcoma was 1,40/1000000 inhabitants/year. The overall incidence of Ewing's sarcoma was 0,53/1000000 inhabitants/year.