This book is intended to offer an extensive overview of the mechanisms of disease and the pathological processes that affect the human body. It covers the fundamental concepts of pathology, including inflammation, infection, neoplasia, and tissue repair. The book also addresses various disease states, their causes, and their effects on different organ systems. It is designed for medical students, pathologists, and healthcare professionals, providing essential knowledge for understanding and diagnosing diseases. By presenting detailed information on pathological processes, the book aims to improve diagnostic and therapeutic approaches in clinical practice.