患者男，72岁。因乏力、消瘦近1年而来院就诊，查体:贫血貌、消瘦.右下腹可扪及一个4cm*3cm大小的肿块，界清，质硬，无明显压痛，纤维结肠镜检查提示为盲肠癌，对该患者行根治性右半结肠切除术时，不需要切除

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