下顎骨에 發生한 骨肉腫의 外科的 治驗二例

Surgical treatment of the osteogenic sarcoma in mandible : report of two cases

Osteogenic sarcoma of the jaws is a peculiar entity within the content of the malignant bone tumors of other sites. It is considered quite rare in the jaws, where it comprises only 6.5 to 7.4 percent of cases. Entities such as Paget s disease of bone, fibrous dysplasia, osteogenesis imperfecta, and trauma have been considered predisposing factors to osteogenic sarcoma, but this relationship has not been extensively studies in the jaws. Treatment of this tumor is radically resection as early as possible. The overall 5 year survival rate for jaws were 35 percent after surgery. Our result showed that radical resection and postoperative irradiation is the best therapeutic procedure. Finally, if palpable cervical nodes are present, suprahyoid homolateral neck dissection should be improved survival.