Fibrosarcoma of the thyroid.
D000368:Aged; D005354:Fibrosarcoma / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery*; D006801:Humans; D008297:Male; D009362:Neoplasm Metastasis; D013964:Thyroid Neoplasms / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery*