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腹腔镜结肠切除术用以治疗结肠癌的问题仍有争议，尤其不少病例报道有套管孔处癌肿细胞的种植，其来源尚不清楚，气腹可迫使游离的腹腔内存活肿瘤细胞进套管孔处而致局部复发。作者在过去实验中曾证实1．33kPa（10mmHg）气腹能增加套管孔处肿瘤细胞的种植，本次实验则是随机对?
The issue of laparoscopic colectomy for the treatment of colon cancer is still controversial, and in many cases there are reports of the implantation of cancer cells at the cannula septum. The source of this disease is not yet known. Pneumoperitoneum can force free intraperitoneal survival of tumor cells. Local recurrence occurs at the cannula hole. In previous experiments, the authors confirmed that a 1.33 kPa (10 mmHg) pneumoperitoneum could increase the implantation of tumor cells at the cannula ostia. This experiment was performed at random.