Synovial sarcoma of the head and neck.
D003036:Cobalt Isotopes / Q000627:therapeutic use; D006257:Head; D006258:Head and Neck Neoplasms / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D013584:Sarcoma, Synovial / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D013964:Thyroid Neoplasms / Q000473:pathology / Q000601:surgery
D003036:Cobalt Isotopes