Abstract:Abstract: Objective To explore the clinical value of metal stent implantation under lateral endoscopy and X-ray monitoring in treatment of malignant obstruction of gastric outlet, duodenum and jejunum. Methods 23 patients with malignant obstruction of gastric outlet, duodenum and jejunum were retrospectively analyzed, including 13 males and 10 females, aged 53 ~ 82 years, with an average age of 68.7 years. There were 12 gastric tumors, 5 pancreatic tumors, 3 ampulla abdominal tumors, 1 gallbladder cancer, 1 bile duct cancer and 1 duodenal cancer. All patients were diagnosed with malignant tumors by endoscope or surgical pathology. There were 12 cases of pyloric antrum and residual stomach obstruction, 8 cases of lower duodenal bulb and descending part obstruction, 3 cases of horizontal duodenal and proximal empty intestinal obstruction. The obstruction site was confirmed by gastroscopy, abdominal plain radiograph, upper gastrointestinal radiography, CT and MRI and so on. And there was a serious Angle between the narrow part and the expanded intestinal cavity. The guide wire was implanted through duodenal lateral endoscope, and the self-expanding intestinal metal stent was released under X-ray monitoring. Results 28 metal stents were all implanted successfully in 23 patients. The tumor in 5 cases grew to restenosis and re-implanted with semi-covered metal stents. The placement success rate was 100%. One patient with duodenal stent biliary followed by stent showed transient bilirubin elevation. No gastrointestinal perforation or other serious complications occurred. All patients were relieved or relieved of obstruction symptoms after 24 hours stent implantation. During the follow-up period of 3 ~ 12 months, all stent were maintained patency. Conclusion Malignant obstruction of gastric outlet, duodenum and jejunum which were serious Angle between the narrow part and the expanded intestinal cavity. Duodenal lateral endoscope joint X-ray placed in stomach, duodenum and jejunum metal stents can improve the success rate relieving visual endoscopy combined X-ray method.