Interstitial Lung Disease, 5th edition, is a complete volume addressing interstitial lung diseases with a multidisciplinary approach to diagnosis covering a wide array of disorders such as sarcoidosis, asbestosis, hypersensitivity pneumonitis, drug induced lung disease, connective tissue disease, and pulmonary vasculitis. The editors cover clinical, pathologic, radiologic, and physiologic evaluation of the patient with ILD and provide basic pathobiology and complete descriptions of individual disease entities. Interstitial Lung Disease is divided into two sections. The Clinical Approach section provides the basis for recognizing the key features that allow a specific diagnosis. Basic Mechanisms emphasizes the many advances in genetics and cellular and molecular biology that have expanded our understanding of the biological processes involved in the pathogenesis of interstitial lung diseases.