Department of Gastroenterology West China Hospital Sichuan University Chengdu 610041 Sichuan Province China;
Department of Gastroenterology West China Hospital Sichuan University Chengdu 610041 Sichuan Province China;
Department of Gastroenterology West China Hospital Sichuan University Chengdu 610041 Sichuan Province China;
Department of Gastroenterology West China Hospital Sichuan University Chengdu 610041 Sichuan Province China;
Diverticulum; Esophageal fistula; Endoscopy; Pedicle grafting; Case report;