The clinical problems and dilemmas which the busy clinician encounters on a daily basis are the main focus of this publication. Emphasizing a clinical rather than a pathophysiological approach to problems, it facilitates access and helps the practicing clinician to develop an effective and efficient diagnostic and therapeutic strategy. Nevertheless, clinically important aspects of pathophysiology are also dealt with in detail when called for. A variety of scenarios that are especially relevant to modern medical practice, such as the intensive care unit, are taken into account. A group of internationally renowned experts guides the reader through the broad variety of diagnostic options available to assist in the assessment of symptoms originating anywhere along the gastrointestinal tract, from the esophagus to the anus, and, in each instance, every effort is made to critically appraise the technology discussed. Moreover, general overviews of broadly relevant therapeutic approaches are also provided. Pediatric and adult gastroenterologists, gastrointestinal surgeons and hospitalists will find this publication to be a valuable help in their daily practice.