结论对无显微镜下淋巴结转移的结直肠癌患者，尽量切除全数淋巴结可明显延长患者的存活时间。
Conclusion Prophylactic lymph node dissection can potentially prolong the survival time of the patients with node negative colorectal cancer.
结论对无显微镜下淋巴结转移的结直肠癌患者，尽量切除全数淋巴结可明显延长患者的存活时间。
Conclusion Prophylactic lymph node dissection can potentially prolong the survival time of the patients with node negative colorectal cancer.
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