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目的探讨放疗对PT2N0M0中危组乳腺癌患者预后的影响。方法按危险因素的个数将PT2N0M0中危组患者101例分为A组(含1个危险因素,n=45)和B组(含有2个或2个以上危险因素,n=56),B组又随机分为未行放疗的B0_组(n=32)和行放疗的B_1组(n=24),比较A、B两组及B亚组间5年的生存指标,并进一步分析影响预后的危险因素。结果 5年随访率92.3%,A、B两组及B亚组间5年局部复发率(LR)、远处转移率(DM)、无病生存期(DFS)、总生存率(OS)差异均无统计学意义。单因素分析显示年龄、脉管侵犯、免疫组织化学与生存指标相关,多因素分析显示年龄为5年无瘤生存率的独立危险因素。结论 PT_2N_0中危组乳腺癌患者需要个体化放疗,尤其是综合考虑年龄与免疫组织化学等危险因素。
Objective To investigate the effect of radiotherapy on the prognosis of patients with breast cancer in the intermediate risk group of PT2N0M0. Methods According to the number of risk factors, 101 patients with risk group of PT2N0M0 were divided into group A (including 1 risk factor, n = 45) and group B (2 risk factors or more, n = 56), B The patients were randomly divided into two groups: group B0 (n = 32) and group B_1 (n = 24) treated with radiotherapy. The 5-year survival indices of group A and group B were compared with group B Prognostic risk factors. Results The 5-year follow-up rate was 92.3%. The 5-year local recurrence rate (LR), distant metastasis (DM), disease-free survival (DFS) and overall survival (OS) were significantly different between groups A and B No statistical significance. Univariate analysis showed that age, vascular invasion, immunohistochemistry and survival indicators were correlated. Multivariate analysis showed that the age was 5 years independent risk factors for disease-free survival. Conclusion PT_2N_0 patients with moderate risk of breast cancer need individualized radiotherapy, especially considering the age and immunohistochemistry and other risk factors.