Crohn's disease is an inflammatory bowel disease, whose symptoms are similar to other intestinal disorders, such as irritable bowel syndrome and ulcerative colitis; it can therefore be difficult to diagse. Its kwledge and understanding have increased considerably in the last years; new advances in genetics, medical and surgical management offer today new possibilities for patients suffering from an inflammatory bowel disease. However, Crohn's disease remains a difficult disease to deal with, both from a research and clinical point of view. This book provides general practitioners with a basic kwledge of the disease, offering in the same time an update on new facts about Crohn's disease to specialists. It can also be useful for residents willing to develop a deeper kwledge of inflammatory bowel diseases.