Etiology.- Epidemiology.- Genetics.- The Role of the Pathologist in the Management of Patients with Crohn's Disease.- Clinical Presentation.- Diagnostic and Therapeutic Role of Endoscopy.- Laboratory Tests.- Imaging.- Diagnosis of Anorectal Disease.- Role of Interventional Radiology.- Standard Therapeutic Approach.- New Therapies.- Cell and Stem-Cell Therapies of Crohn's Disease and Complications.- Surgical Treatment.- Crohn's Disease in Children.-...