I have not embarked on the foreword to this scientific monograph by Armando and Gior­ gio ROSSI in the expectation that it will be an easy task, because these two authors are the last remaining members of a family that has left its mark in the field of radiology in our country: therefore, the writer's enthusiasm and detachment could be jeopardized by mem­ ories of his own teachers and elders and the respect he still feels towards them. The line stretches from Armando Rossi Sr., a pioneer in the field of radiology in Italy, a scientist and a versatile teacher, a student of Beclere and Busi, to Lucio Rossi, an eminent teacher,a learned man and a gentleman. An official biographyofArmando Rossi shows that in his last years, his wide didactic interests were directed towards his own family, leading him to devote his attention to those of his grandchildren who were then getting ready to embrace the medical profession.

Section 1: Introduction.- Normal Anatomy.- Physiology and Physiopathology of the Peritoneum.- CT Techniques.- CT Anatomy.- Section 2: Primary and Secondary Pathology of the Peritoneum.- Fluid Collections...- Acute Inflammatory Diseases.- Chronic Inflammatory Diseases.- Peritoneal and Mesenteric Trauma.- Other Nonneoplastic Pathologies.- Abdominal Herniae.- Cysts.- Primary Tumors.- Diffusion of Mahgnant Tumors of Intraperitoneal Organs to the Peritoneum, Ligaments, Mesenteries, Omentum and Lymph Nodes.