Objectives To study the extent and method in laparoscopic clearance of lymph nodes during radical operation for carcinoma of rectum and sigmoid colon.
目的研究经腹腔镜行乙状结肠、直肠癌根治术中淋巴结清扫的范围和方法。
Carcinoma of colon is one of higher morbidity cancers all over the world. Operation is main way for radical cure.
结肠癌是世界上发病率比较高的癌症之一，手术治疗是根治结肠癌的主要手段。
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