80% of nonthyroid neck masses in adult are neoplastic(非來自於甲狀腺的頸部腫塊在成人有80%為腫瘤)
80% of neoplastic masses are malignant(腫瘤80%為惡性)
80% of malignant masses are metastatic(惡性腫瘤80%會轉移)
80% malignancies in adults are squamous cell carcinomas(成人的惡性腫瘤80%為鱗狀細胞瘤)
80% of metastatic are from head and neck(80%的轉移性腫瘤來自於頭頸部)
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