Abstract: Objective: To observe the efficacy of endoscopic stenting for proximal colonal obstruction casused by malignant lesion. Methods: A total of 27patients,17 men and 10 women, a mean of 65.8 years old, who received X-ray-guided endoscopic stenting from September 2012 to July 2015 ,were enrolled into these retrospective analysis. The obstructive siter were: sigmoid colon(n=17), descending colon (n=6), rectum (n=3), transverse colon(n=1) . Results: Of the 27 patients ,25 were successfully inserted with metal stents(25/27,92.6%) ,and showed relif or disappear of symptoms within 1 day without major complications. 22 underwent metal stent elective surgical resection after 5～12 days and 1 case after 38 days. There were not important complications in surgical operation cases. Among the metal stent was performed in 2 cases for palliative treatment. Conclusions: Endo scopic placement of metal state can relive the obstructive symptoms caused by colorectal cancer with high successful rate.It is safe,effective, and furthermore for promotion of stage I coeloretal cancer resction ang anastomosis.

Key words: X-ray, Metal stent, Endoscopy, Colorectal cancer, Obstruction