PURPOSE: to evaluate the safety and feasibility of laparoscopy in colorectal surgery and to explore the application of laparoscopy in colorectal surgery for benign and malignant diseases.
目的：探讨腹腔镜结直肠手术治疗结直肠良恶性病变的安全性与可行性。
Objective: To explore the feasibility, procedures and applied value of laparoscopy-assisted surgery for colorectal malignant tumor.
目的：探讨腹腔镜辅助结直肠恶性肿瘤手术的可行性、手术方法及应用价值。
To investigate the changes of systemic immune function in patients undergoing laparoscopy-assisted colorectal tumor surgery during peri-operation period.
目的探讨腹腔镜结直肠癌根治术围术期系统免疫功能的变化。
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