Interstitial lung diseases are conditions that can be difficult to characterize, diagnose, and treat, and for most pulmonary specialists are the most challenging and demanding of their practice. These disorders can appear solely in the lung, or as either the initial manifestation or a significant component of a multisystem disorder. In addition, many of these diseases are a consequence of specific exposures that the patient encounters either at the workplace, at home, or from medications or dietary supplements. Further, treatment options, until recently, have been limiting and unsatisfactory. Consequently, physicians need a heightened level of astuteness when caring for patients with presumed or established interstitial lung disease. Interstitial Lung Disease, Fourth Edition, published by BC Decker, is a multiauthored comprehensive review of interstitial lung disease presented as a well-organized volume edited by Marvin Schwarz and Talmadge King, and includes an accompanying CD-ROM (compact disk-read only memory) containing the complete text and illustrations of the book in fully searchable PDF (portable document format) files.