The advancements in the field of molecular medicine are changing respiratory medicine significantly. This book consists of the knowledge and experience of renowned scientists and clinicians from around the world. It will benefit aspiring clinicians and scientists about the current developments in a variety of lung ailments that will enable them to understand respiration related disorders. The major topics covered in this book are airways disease and neoplastic diseases. This book will be valuable to clinicians to keep up with the latest concepts, to enhance their diagnostic skills, and to understand the potential new therapeutic applications in lung diseases. It will also be beneficial to scientists who can further new research areas for investigation.