[1]Department of Gastroenterology;
Qilu Hospital;
Shandong University;
Jinan 250012;
Shandong Province;
China;
[2]Department of Gastroenterology;
Yantai Affiliated Hospital of Binzhou Medical University;
Yantai 264100;
Shandong Province;
China;
[2]Department of Gastroenterology;
Yantai Affiliated Hospital of Binzhou Medical University;
Yantai 264100;
Shandong Province;
China;
[3]Department of Nutrition;
University of Tennessee;
Knoxville;
TN 37996;
United States;
[1]Department of Gastroenterology;
Qilu Hospital;
Shandong University;
Jinan 250012;
Shandong Province;
China;
Enteroscopy; Primary gastrointestinal amyloidosis; Endoscopic ultrasonography; Pathological diagnosis;