Objective To retrospectively analyze the events of multiple primary malignant tumor in patients with laryngeal and hypopharyngeal cancer.
目的回顾性分析喉癌和喉咽癌发生重复癌的情况。
Objective To retrospectively analyze the events of multiple primary malignant tumor in patients with laryngeal and hypopharyngeal cancer.
目的回顾性分析喉癌和喉咽癌发生重复癌的情况。
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