通常在手术前给予激素治疗以缩小肿瘤体积，有效减轻肿瘤分期
强光逆境下，速降期类囊体电子传递活性受抑制程度比高值持续期明显。
The decreasing of thylakoid membrane electron transport activities in sharp fall phase were significantly higher than that of active photosynthetic duration under strong illumination stress.
直肠癌术前放化疗过程的不同时间点体积变化无法准确提示肿瘤是否降期。
So the higher DWI volumetric tumor reduction rate is more inclined to have negative nodes in rectal cancer with preoperative chemoradiotherapy.
结论术前新辅助内分泌治疗在高龄乳腺癌患者中能达到原发病灶和区域淋巴结降期的目的。
Conclusion Preoperative endocrine therapy for breast cancer of elderly women could effectively delay or remit the advancement of the tumor.
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