作者单位:The Center of Scientific Research, Chongqing Corps Hospital of Chinese People's Armed Police Forces[1]Department of Gastroenterology, Institute of Surgery Research, Daping Hospital, Third Military[2]Division of Gastroenterology, Curto Hospital, Polla, Italy[3]Division of Radiology, Curto Hospital, Polla, Italy[4]Division of Gastroenterology, Maresca Hospital, Torre del Greco, Italy[5]