Department of Gastroenterology The Affiliated Hospital of Qingdao University Qingdao 266003 Shandong Province China;
Department of Gastroenterology The Affiliated Hospital of Qingdao University Qingdao 266003 Shandong Province China;
Department of Gastroenterology The Affiliated Hospital of Qingdao University Qingdao 266003 Shandong Province China;
Department of Gastroenterology The Affiliated Hospital of Qingdao University Qingdao 266003 Shandong Province China;
Department of Gastroenterology The Affiliated Hospital of Qingdao University Qingdao 266003 Shandong Province China;
Department of Gastroenterology The Affiliated Hospital of Qingdao University Qingdao 266003 Shandong Province China;
Endoscopy Center Shandong Qingdao Sanatorium Qingdao 266000 Shandong Province China;
Endoscopic resection; Submucosal dissection; Space-occupying lesions; Duodenal adenoma; Duodenal lesions; Complications;