Can radical resection of colorectal cancer be performed without an opening in the stomach? But today, this “impossible task” has become a reality for the treatment team of Dr. Zhou Zhixiang, Chief of Abdominal Surgery Department of Cancer Hospital of Chinese Academy of Medical Sciences. Laparoscopic surgery for colorectal cancer has been widely used in abdominal surgery. The intuitive image of laparoscopic surgery is usually a few puncture points on the abdominal wall and a small 4-8 cm long incision for removing the surgical specimen. This perception will be changed by the taNOSE procedure performed by Dr. Zhixiang Zhou. The taNOSE procedure is actually an abbreviation for trans-anal nature orifice specimen extraction (taNOSE), which means that the surgical specimen is removed from the abdominal cavity through the rectum and anus without the need for a secondary incision in the abdomen. This procedure is based on the traditional laparoscopic surgery, which further reduces the trauma to the patient and has superior minimally invasive and aesthetic features. In fact, taNOSE laparoscopic colorectal cancer surgery has been reported internationally five or six years ago, but because this procedure requires skillful laparoscopic operation and solid laparoscopic anastomosis technique, until now, there are not many medical units at home and abroad that can perform this technique. Since his return from studying laparoscopic techniques in Australia in 2007, Dr. Zhou Zhixiang has completed thousands of laparoscopic surgeries for gastrointestinal tumors and has accumulated rich experience in laparoscopic surgical techniques and skills. In order to enable patients to get more benefits from laparoscopic technology, Dr. Zhou Zhixiang, the chief physician, based on conventional laparoscopic equipment, researched domestic and foreign taNOSE surgical methods, combined with his own laparoscopic surgical experience, and created a unique taNOSE laparoscopic colorectal cancer surgery plan, which not only achieves the same lymph node clearance scope as traditional surgery, but also reduces the trauma to patients. . From June 2012 to September 2013, Dr. Zhou Zhixiang, chief physician, led a treatment team consisting of Dr. Zhou Haitao, deputy chief physician, Dr. Liang Jianwei, Zhang Xingmao, Hu Junjie, Dr. Zeng Weigen, Dr. Wang Zinian from Lanzhou Second Hospital, Dr. Ma Shenghui from Chengde Central Hospital, under the supervision of Director Sun Li from the Department of Anesthesiology, Nurse Directors Wu Xihong and Wang Lixia from the operating room, and Dr. Wang Hongchun, Gao Yuan, Wang He, Zheng With the cooperation of nurses such as Chao, Yang Xuying and Wu Yuting, a total of nearly 50 taNOSE laparoscopic surgeries for sigmoid colon cancer and upper middle rectal cancer were completed, and all patients except one case of anastomotic fistula and one case of postoperative bleeding were successfully discharged from the hospital, which reached the leading level at home and abroad and filled another gap of laparoscopic technology in the Cancer Hospital of the Academy of Medical Sciences. The relevant research results have been reported by Chinese Medical Journal.