Objective: To explore the clinical value of colonoscopy in laparoscopic resection of colorectal neoplasms.
Methods: A total of 28 patients with colorectal neoplasms underwent laparoscopic resection. All patients received colonoscopy for neoplasm localization, and to observe anastmotic leakage and anastmotic bleeding after anastomosis,and any concomitant colorectal polyps were treated by local excision via colonoscopy.
Results: All lesions were successfully oriented and resected. There weve no conversions to open surgery. The mean operation time was 190(120-230)minutes, and the average postoperative hospital stay was 9.5(7-12)days. The intraoperation colonoscopy discovered anastmotic leakage（n=1）,anastmotic bleeding（n=1）and proximal colon adenomatous polyps（n=3）. The main  postoperative complication only occurred in one case of fat liquefaction of abdominal incision; there was no bleeding, leakage or stenosis of anastomosis postoperatively. Postoperative pathological examination revealed no residual tumor or infiltration of tumor cells in resection margin.
Conclusions: Colonoscopy could quickly and accurately determine the extent of neoplasms during  laparoscopic resection of colorectal neoplasms, and fill up a shortcoming in laparoscopic resection.It could decrease exfoliation of tumor cells into abdominal cavity,tumors can be completely and radically removed, the anastomotic sites can be accurately observed, and bleeding or leakage of anastomosis can be effectively prevented and treated. This method is worthy of widespread application.