TY - CHAP M1 - Book, Section TI - Benign Diffuse Pulmonary Disorders A1 - Merlo, Christian A. A2 - Yuh, David D. A2 - Vricella, Luca A. A2 - Yang, Stephen C. A2 - Doty, John R. Y1 - 2014 N1 - T2 - Johns Hopkins Textbook of Cardiothoracic Surgery AB - EpidemiologyDiffuse benign pulmonary disorders cover a broad range of primary lung diseases and can be associated with systemic disorders.PathophysiologyMost benign pulmonary disorders are derived from intrinsic or extrinsic injury. Such injury can take the form of cellular and/or humoral immunologic injury triggered by inhaled antigens, infectious agents, or autoimmune processes. Chemical injury from smoking or certain drugs has also been implicated.Clinical featuresMost presenting symptoms include progressive dyspnea and cough. Other symptoms include chest pain, wheezing, and hemoptysis. Physical signs include heavy use of accessory muscles of breathing, cyanosis, and clubbing. Systemic signs of illness seen with some illnesses include fatigue, weight loss, and malaise.DiagnosticsMost diffuse benign disorders are characterized by plain chest radiography, computed tomography, and open or video-assisted thoracoscopic lung biopsy. Most of these disorders have characteristic radiologic pulmonary parenchymal patterns, adenopathy (e.g., sarcoidosis), and histologic characteristics. Bronchoscopy with transbronchial biopsies/bronchoalveolar lavage, fine-needle aspiration biopsies, and sputum cultures and/or cytologies is also helpful in many cases. Finally, a complete blood count with differential (e.g., eosinophilic processes) and serum chemistries are helpful in some cases.TreatmentAlthough treatment recommendations vary with the particular pulmonary process, many are corticosteroid based while others are predicated on removal of an inciting agent (e.g., drug, tobacco smoke).OutcomesClinical outcomes vary widely according to the particular process. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - accesssurgery.mhmedical.com/content.aspx?aid=1104584372 ER -