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用筛选法对甲状腺癌作预后影响因素分析。方法：搜集1985年～1997年本院收治的150例甲状腺癌患者，采用Long－rank时序检验、X2检验、COX模型分别分析单因素、多因素对预后的影响。结果：从12个因素中筛选6个因素，含年龄、浸润程度、滤泡状癌、其他类型癌（髓样癌、未分化癌）、纵隔及器官转移、UICC分期等对预后都有影响（P＜0．05）。结论；年龄＞40岁，浸润程度加深，病理为滤泡癌、髓样癌、未分化癌，颈外转移及UICC分期对甲状腺癌预后不佳。
Screening was used to analyze the prognostic factors of thyroid cancer. Methods: 150 patients with thyroid cancer who were treated in our hospital from 1985 to 1997 were collected. Long-rank test, X2 test and COX model were used to analyze the influence of single factor and multi-factor on prognosis. RESULTS: Six factors were screened out of 12 factors, including age, invasiveness, follicular carcinoma, other types of carcinoma (medullary carcinoma, undifferentiated carcinoma), mediastinal and organ metastases, and UICC staging. P<0.05). Conclusions; Age> 40 years old, deeper infiltration, pathological follicular, medullary, and undifferentiated carcinomas, extracranial metastasis, and UICC staging have poor prognosis for thyroid cancer.