Gastrointestinal endoscopy is the principal tool for the investigation and treatment of most diseases of the gastrointestinal tract. The Atlas of Clinical Gastrointestinal Endoscopy offers a comprehensive overview of the role of gastrointestinal endoscopy in diagnosis. The atlas contains an abundance of high-quality images of a wide range of diseases of the upper and lower gastrointestinal tract, accompanied by precise clinical descriptions. Normal findings and variants are also documented. Furthermore, many images obtained by means of advanced image-enhanced endoscopy, capsule endoscopy, device-assisted enteroscopy, and endoscopic ultrasound are included. This book will be an ideal reference for both specialists and trainees in gastroenterology. It will provide the reader with an invaluable store of knowledge and with the clear guidance required in order to perform gastrointestinal endoscopy to best effect.

Hoon Jai Chun is Professor and Chief of the Division of Gastroenterology and Hepatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea. Dr. Chun has established various methods of endoscopic treatment for gastrointestinal diseases and holds numerous patents related to endoscopic diagnostic and therapeutic devices. Furthermore, he has undertaken research studies on prevention and treatment of functional gastrointestinal disease, Helicobacter pylori infection and gastrointestinal cancer. Dr. Chun has served as Secretary General of the Korean Society of Gastrointestinal Endoscopy and Secretary General of the Korean Society of Gastrointestinal Cancer. Dr. Chun is also a member of many international gastroenterology societies, including the European Society of Gastrointestinal Endoscopy (ESGE) and Japan Gastroenterological Endoscopy Society (JGES), and is a Fellow of both the American Gastroenterological Association (AGAF) and the American Society of Gastrointestinal Endoscopy (FASGE). He has published more than 400 full scientific articles in the foremost journals and written numerous book chapters. Dr. Chun has also been an editor and a reviewer of more than 15 prestigious international journals. His contributions to the medical sciences and academic advancement have been recognized with many domestic and international academic awards.

Myung-Gyu Choi graduated from the College of Medicine, the Catholic University of Korea, in 1982 and completed his internship and residency in Internal Medicine at St. Mary's Hospital of the Catholic University of Korea. After obtaining his PhDfrom the same graduate schoolin 1993, he served as a visiting scientist at the Mayo Clinic, USA from 1995 to 1997. He is currently Director of the Gastroenterology Center of Seoul St. Mary's Hospital and Professor in the Department of Internal Medicine at The Catholic University of Korea. Dr. Choi is a pre-eminent leader in gastroenterology, with a particular interest in clinical endoscopy and enteric neuroscience. He is current President of the Korean Society of Gastrointestinal Endoscopy and was President of the Korean Society of Neurogastroenterology and Motility from 2007 to 2009. Dr. Choi has served as leader of the Korean Gut Image Study Group during the past decade, which has overseen the National Capsule Endoscopy Registry. He has also made important contributions in developing diagnostic and treatment guidelines for gastrointestinal diseases in Korea. He has published over 200 original articles in national and international journals.

Suk-KyunYang is Professor of Gastroenterology at University of Ulsan College of Medicine and Director of the Inflammatory Bowel Disease Center at Asan Medical Center, Seoul, Korea. Dr. Yang earned his MD at Seoul National University College of Medicine and completed his residency in Internal Medicine at Seoul National University Hospital and his fellowship in Gastroenterology at Asan Medical Center. He obtained his postdoctoral research fellowship at the Mucosal Immunolo