The Mayo Clinic Gastroenterology and Hepatology Board Review has been designed to provide a review of core essential knowledge in gastroenterology, hepatology, and relevant related areas of radiology, pathology, endoscopy, and nutrition. Clinical knowledge to enhance patient management, rather than the latest scientific advances, is emphasized. For those preparing for their board examination, certification or recertification, case-based presentations and numerous board examination-type single best-answer questions with annotated answers are provided, and abundant figures, images and tables are also included.