This book is a comprehensive compilation of the new knowledge accumulated in peritoneal surface oncology in the dawn of the twenty-first century. It covers the complete spectrum of the latest research carried out in peritoneal malignant dissemination, from its pathogenesis and molecular mechanisms to the latest clinical trials. Additionally, the essentials of perioperative intraperitoneal chemotherapy and the modern histopathological assessment of peritoneal surface malignancy are reviewed. A unique historical perspective on how this new knowledge has unfolded over the years helps point out the future research directions to be pursued. Leading experts in this field from around the world, including the pioneers who gave birth to this new era in oncology, form an unbeatable and outstanding panel of authors.