[Radiotherapy of periodical fraction with massive dose for secondary squamous cell carcinomas of the neck].
D002294:Carcinoma, Squamous Cell / Q000532:radiotherapy*; D006258:Head and Neck Neoplasms / Q000532:radiotherapy*; D006801:Humans; D009362:Neoplasm Metastasis / Q000532:radiotherapy; D011832:Radiation Injuries / Q000209:etiology; D011879:Radiotherapy Dosage