Forthe random PT 2N 0M 0 breast cancer patient, the use of adjuvant treatment does not improve the 5 year DFS compared with those with surgery alone, but only leads to the waste of money and harms the life quality of the patients.

• 结论无选择性应用术后辅助治疗并不能提高PT2N0M0乳腺癌患者的5年DFS及可能的长期生存率，并造成不必要的经济损失及患者生活质量的影响。