乳腺癌术前化疗即新辅助化疗，使局部进展期乳腺癌的治疗取得了重大进展。

Nowadays, neoadjuvant chemotherapy, which is raised by clinic, made a big breakthrough in breast cancer partial treatment progression.

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结论ET方案对局部进展期乳腺癌进行新辅助化疗，在肿瘤及淋巴结缩小（降期）效果方面，4周期组明显优于2周期组。

Conclusion Neo-adjuvant chemotherapy with ET regimen for 4 cycles were more effective than 2 cycles to down staging locally advanced breast cancer.

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