Radiation Patterns of Modern Sarcoidosis (Alphabet)

Radiation diagnostics of sarcoidosis in modern conditions is CT, supplemented by radionuclide studies (SPECT, PET), ultrasound, MRI. The paper describes the classic signs of pulmonary sarcoidosis (according to the Statement on Sarcoidosis, 1999), which have changed their characteristics due to the widespread use of CT: variants of lymphadenopathy, dissemination, interstitial involvement. New unfavorable forms of thoracic sarcoidosis are discussed: fibrous sarcoidosis (with a description of the variants of sarcoid fibrosis and their differences from other progressive pulmonary fibrosis) and progressive sarcoidosis (possible causes and patterns). Radiation semiotics of extrapulmonary and comorbid manifestations is touched upon.