Inflammatory bowel disease is a heterogeneous group of chronic, idiopathic, immune-mediated, inflammatory disorders of the gastrointestinal tract, including Crohn's disease and ulcerative colitis. In this book, the reader will find a preliminary section on the etiopathogenesis, epidemiology, and clinical-pathologic aspects of Crohn's disease, and - bearing in mind that the best therapeutic choice begins with an accurate diagnosis - an attempt to provide an updated, comprehensive view of the state-of-the-art endoscopic and radiologic procedures used in the diagnosis, staging and management of Crohn's disease with special emphasis on test appropriateness in the various clinical setting.