我科于 1997年 1月～ 1998年 3月收治鼻咽癌颈Ｎ3 淋巴转移者 46例 ,随机分成加预防化疗组 (预防组 )及常规照射组 (对照组 ) ,观察两组远处转移状况及控制率 ,报道如下。1　资料与方法1 1　一般资料　预防化疗组 2 3例 ,男19例 ,女 4例 ,年龄 30～ 70岁 ,40岁以上占 80 % ;对 46 cases of nasopharyngeal carcinoma N3 lymphatic metastasis were treated in our department from January 1997 to March 1998, and randomly divided into preventive chemotherapy group (prophylaxis group) and conventional radiation group (control group). The distant metastasis status And control rate, reported below. 1 Materials and Methods 1 1 General Information Preventive chemotherapy group 23 patients, 19 males and 4 females, aged 30 to 70 years, 80% of those over the age of 40;