胃肠道肿瘤一旦发生淋巴结转移和腹膜种植播散,则以常规治疗治愈的可能性大大降低。直径小于1.0cm的转移灶在CT和超声检查中常难以发现。因此,腹腔镜检查已越来越多地用于多种胃肠道肿瘤如胃、胰腺和结直肠癌的治疗前分期。但是约12%的患者在常规腹腔镜(白光)检查后确定的开腹 Once lymph node metastasis and peritoneal planting and dissemination of gastrointestinal tumors occur, the possibility of cure with conventional treatment is greatly reduced. Metastases less than 1.0 cm in diameter are often difficult to find on CT and ultrasonography. Therefore, laparoscopy has been increasingly used for the pre-treatment staging of various gastrointestinal cancers such as stomach, pancreas, and colorectal cancer. However, approximately 12% of patients had laparotomy after routine laparoscopic (white light) examination.