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鼻咽癌(nasopharyngeal carcinoma,NPC)是我国常见的恶性肿瘤之一,以“两广”多见。放射治疗为主要的治疗手段,但单纯放射治疗鼻咽癌的5年生存率仅50%左右。由于鼻咽的解剖部位深,解剖结构复杂,病理主要为非角化型未分化癌以及易出现颈部淋巴结及远处转移。在初诊的患者中,Ⅲ、Ⅳa期鼻咽癌约占总病例的70%左右,而局部晚期鼻咽癌(Ⅲ、Ⅳ)的5年生存率更低,为25%～50%。局部晚期鼻咽癌治疗失败的主要原因是局部复发和远处转移。其
Nasopharyngeal carcinoma (NPC) is one of the most common malignant tumors in our country. It is more common in Guangdong and Guangxi. Radiation therapy as the main treatment, but only 5-year radiotherapy nasopharyngeal cancer survival rate of only about 50%. Due to the deep anatomical parts of the nasopharynx, the anatomical structure is complex, the pathology is mainly non-keratinized undifferentiated carcinoma and prone to neck lymph nodes and distant metastasis. Among newly diagnosed patients, stage Ⅲ and Ⅳa nasopharyngeal carcinoma account for about 70% of the total cases, while locally advanced nasopharyngeal carcinoma (Ⅲ and Ⅳ) have a lower 5-year survival rate of 25% to 50%. The main reason for the failure of locally advanced nasopharyngeal carcinoma is local recurrence and distant metastasis. its