A case of femur osteosarcoma metastasizing to the mandibular gingiva

Abstract

An extremely rare case of metastatic osteosarcoma to the mandibular gingiva in a 22-year-old man is presented. The tumor was completely resected with marginal resection of the mandibular bone. No evidence of local recurrence was detected 2 years after surgery. Metastases to the lung and lumber vertebrae were successfully treated with antitumor agents highly active against cultured tumor cells obtained from the resected specimen.