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Clinical value and safety of the use of gastroscopy as oral choledochoscopy in the treatment of biliary diseases was explored. Clinical data of 55 patients with biliary diseases who underwent gastroscopy were retrospectively analyzed. The types of gastroscopy, size of duodenal papilla incision, balloon dilatation, the success rate of gastroscopy entry, depth of gastroscopy entering into bile duct, endoscopic diagnosis and postoperative complications were recorded. Simple insertion-by-hand was performed, and insertion into common bile duct was successfully achieved in 53 cases, and the overall technical success rate was 96.4%. Residual bile duct stones in 25 patients (45.5%) after endoscopic retrograde cholangio-pancreatography (ERCP) were removed through endoscopy. Nine cases of benign stenosis and 2 cases of malignant stenosis were confirmed as 'cholangiocarcinoma' or 'duodenal papilla well-differentiated adenocarcinoma' by biopsy. Balloon oppression under intraoperative endoscopy was performed for 2 cases (3.6%) with biliary hemorrhage, and argon ion coagulation was successfully performed. No obvious abnormalities were found in 13 cases (23.6%) through gastroscopic biliary exploration. Complications occurred in 15 patients with a complication rate of 27.3%, including 2 cases of cholecystitis (3.6%), 8 cases of amyloidosis (14.6%) and 4 cases of acute pancreatitis (7.3%), and all those complications were cured. One case (1.8%) had perforation of biliary tract and was discharged after conservative treatment. The use of gastroscopy as oral choledochoscopy is safe as effective. However, this technique causes some rare and serious complications. Therefore, further studies are needed to improve this technique.

Clinical study of the use of gastroscopy as oral choledochoscopy