This book on respiratory medicine is the most comprehensive treatise on diseases of respiratory system. A sincere endeavor is made to include the basic concepts with the recent knowledge in management of diseases of the lung. The book has 15 sections containing different aspects of pulmonary medicine, including perinatal pulmonology, basic sciences pertaining to respiratory system, and diseases of the lungs caused by infection, disturbed immune system, and genetic, environmental and occupational reasons. The section on multiple choice questions and answers has 72 questions on recent advances in respiratory medicine and answers with explanation in detail.