This guide analyzes molecular techniques for studies of the infectious causes of sarcoidosis; recent discoveries on the genetics of sarcoidosis; methods for the evaluation of the sarcoidosis patient; areas commonly affected by sarcoidosis including the skin, eyes, and liver; the musculoskeletal manifestations of the disease; various therapies in sarcoidosis including alternatives to corticosteroids; the current literature on the quality-of-life of the sarcoidosis patient; and rare manifestations of the disease. This reference serves as a comprehensive source on the many aspects of sarcoidosis ranging from the basic science and pathophysiology of the disease to patient evaluation and treatment-providing a detailed analysis of the pulmonary aspects of the condition including chapters on radiographic manifestations, bronchoalveolar lavage research, pulmonary function studies, and proposed markers for the diagnosis and management of the disease.