This textbook of pathology for undergradute medical students is targeted directly at the core syllabus and presents the essential information required by undergraduates. In addition, it presents pathology in the context of modern medicine and cellular biology. The book is structured around the basic principles of pathology, the mechanisms of disease and then the systematic pathology (specific diseases affecting individual body systems or organs). To furnish a proper understanding of pathology, each chapter in the systematic section begins with a brief account of the normal structure and function of the organ or system. This edition responds to global changes in medical education by delivering the important concepts and principles. Each chapter also begins with an introductory summary to give essential definitions and core facts.