下咽癌是头颈部较常见的恶性肿瘤，恶性度较高，多浸润生长、易转移，而浸润和转移是下咽癌致死的主要原因。

ObjectiveHypopharyngeal carcinoma is a common malignant tumor in head and neck , invasion and metastasis are responsible for the high death rate.

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下咽癌是头颈部较常见的恶性肿瘤，恶性度较高，多浸润生长、易转移，而浸润和转移是下咽癌致死的主要原因。

ObjectiveHypopharyngeal carcinoma is a common malignant tumor in head and neck , invasion and metastasis are responsible for the high death rate.

youdao