This book is structured in a question and answer format. Such a format is most useful in certain situations. It is useful to enable one to assess strengths and weakness in a particular area before starting a rotation in pulmonary medicine or a board exam review. This permits the reader to concentrate on areas of interest or weakness. Most readers will probably use this book in a post-textbook review mode. One such method would involve reading a chapter in a textbook then proceeding to answer the questions posed in this book. Other readers will prefer to comprehensively study the contents of pulmonary medicine entirely and use this book afterwards. The purpose of the last two methods is to permit the reader to uncover areas of weakness and to become familiarised with the process of answering questions. Answering questions during a board exam is a cognitive task which requires different faculties than reading a textbook. The chapters are organised to include all aspects of pulmonary medicine. The questions within each chapter are randomly presented, to simulate board exams and the way questions arise in real life.