title: Mediastinal sarcoidosis presenting as ventilation-perfusion mismatch.
abstract: Sarcoidosis is a disease of unknown etiology which is characterized pathologically by widespread noncaseating granulomas involving multiple organ systems. We report a case of sarcoidosis presenting as a ventilation-perfusion mismatch on a lung scan.
authors.affiliation: Department of Radiology, Timken Mercy Medical Center/Northeastern Ohio Universities College of Medicine, Canton.
authors.forename: L A
authors.initials: LA
authors.lastname: Cohen
authors.forename: W D
authors.initials: WD
authors.lastname: Murphy
authors.forename: J S
authors.initials: JS
authors.lastname: Kelling
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008477:Mediastinal Diseases / Q000000981:diagnostic imaging* / Q000503:physiopathology; D011859:Radiography; D011877:Radionuclide Imaging; D012507:Sarcoidosis / Q000000981:diagnostic imaging* / Q000503:physiopathology; D014692:Ventilation-Perfusion Ratio