[Laparoscopy and endoscopy cooperative surgery for colorectal tumors]

Laparoscopy and endoscopy cooperative surgery (LECS) for colorectal tumors is not only a minimally invasive treatment, but also a safer therapy. It mainly includes laparoscopy-assisted colonoscopic resection and colonoscopy-assisted laparoscopic surgery. Laparoscopy-assisted colonoscopic procedure can make endoscopic resection more "aggressive". Performers can directly observe to ensure normal intestinal wall, and the intestinal defect can be directly repaired. If suspected malignant tumor can not be removed by colonoscopy, the laparoscopic surgery can be performed. Colonoscopy-assisted laparoscopic surgery can be assisted by endoscopy, including positioning lesion, ensuring anastomotic stenosis, and checking intraoperative bleeding. In case of acute bowel obstruction due to colorectal cancer, a self-expanding metallic stent (SEMS) can be placed for drainage to avoid emergency surgery and colostomy. Then, laparoscopic radical surgery can be done. In conclusion, the LECS provides a new minimally invasive treatment for colorectal tumors. With the development of endoscopic and laparoscopic techniques and devices, LECS will have a wider range of applications.