主题：恶性肿瘤 | 医源世界 关键词:头颈恶性肿瘤;内放射;碘-125粒子 [gap=1178]Key words:Head and neck malignant tumor;Brachytherapy; 125 I seeds
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Objective To evaluate the brachtherapy effectiveness of125I seeds implanted in the head and neck malignant tumor.
目的探讨碘-125（ 125 I）粒子植入内放射治疗技术在头颈部晚期恶性肿瘤治疗中的临床效果。
ObjectiveHypopharyngeal carcinoma is a common malignant tumor in head and neck , invasion and metastasis are responsible for the high death rate.
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。
About half of the patients with malignant tumor in head and neck could obtain long term survival through radiotherapy or other therapy combined with radiotherapy.
通过放疗以及放疗参与的多学科综合治疗能使约半数头颈部恶性肿瘤患者获得长期生存的机会。
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