Stereotactic radiotherapy for primary and metastatic lung tumors

From 1996, we carried out hypo-fractionated stereotactic radiotherapy for 14 lung tumors of 12patients. Among 12 cases, four primary lung cancer and eight metastatic cases from other primary location were included. Among ten cases of which respiratory movement of the tumor were observed by fluoroscopy, average movement in cranio-caudal direction was 4.4mm. Although tumor regrowth was observed in two cases, both tumors were successively controlled by re-irradiation with stereotactic radiotherapy. Seven patients including six with metastatic lung tumors survived longer than 3-years. Stereotactic radiotherapy is considered to be effective both for primary and metastatic lung tumors.