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Previous history of malignant colorectal tumor;\n* Multiple primary colorectal tumors;\n* Preoperative imaging reveals suspicious positive lymph nodes in the submesenteric artery root region (area 253);\n* Patients undergoing neoadjuvant therapy before surgery;\n* With contraindications to laparoscopic surgery;\n* Histoty of multiple abdominal and pelvic surgery or extensive abdominal adhesions;\n* Other malignancies were diagnosed within the past 5 years;\n* History of severe mental illness;\n* Pregnant or lactating women;\n* With uncontrolled infection before surgery.","ALL","18 Years","75 Years",{"count":319,"type":320},550,"ESTIMATED","INTERVENTIONAL",[323],"NA","To explore the short-term and long-term outcomes of fluorescence laparoscopic navigation D2 lymph node dissection for colorectal cancer surgery by comparing it with D3 lymph node dissection.",[326,327,328],"Colorectal Neoplasms","Fluorescence","Lymph Node Excision",[330,331,332],"Colorectal cancer","Fluorescence laparoscopic navigation","Lymph node dissection","NOT_YET_RECRUITING","2023-08-26",{"date":336,"type":337},"2023-08-29","ACTUAL",{"date":339,"type":320},"2023-09-01",{"date":341,"type":320},"2027-06-01",{"name":5,"class":6},19]