AIM: To evaluate the safety and technical success of endoscopic radiofrequency ablation(RFA) for palliative treatment of malignant hilar bile duct obstruction.
Hilar biliary strictures are caused by various benign andmalignant conditions. It is difficult to differentiate benignand malignant strictures. Postcholecystect
AIM To compare the healing effects of vonoprazan and lansoprazole on gastric ulcers induced by endoscopic submucosal dissection(ESD).METHODS Data were obtained