Polymyositis-Dermatomyositis Aqeel A. Chowdhry, MD Tan-Lucien H. Mohammed, MD, FCCP Key Facts Terminology Polymyositis: Autoimmune inflammatory myopathy (limb girdle & anterior neck muscles) Dermatomyositis: Polymyositis + skin rash Imaging Findings…
Aspiration Gerald F. Abbott, MD Key Facts Terminology Aspiration Intake of solid &/or liquid materials into airways and lungs Aspiration pneumonia Pulmonary infection caused by aspiration of colonized oropharyngeal secretions…
Sarcoidosis, Fibrotic Melissa L. Rosado-de-Christenson, MD, FACR Key Facts Terminology Multisystem granulomatous disease Unknown etiology Young and middle-aged adults Frequent involvement of lymph nodes, lung, eye, and skin Imaging Findings…
Wegener Granulomatosis, Lung Helen T. Winer-Muram, MD Key Facts Terminology Classic Wegener granulomatosis (WG) triad: Sinus, lung, & renal disease Multisystem disease of unknown etiology characterized by necrotizing granulomatous small-vessel…
Lymphocytic Interstitial Pneumonitis Jud W. Gurney, MD, FACR Key Facts Terminology Lymphoproliferative disorder ranging from follicular bronchiolitis to low-grade lymphoma Diffuse disease commonly referred to as LIP Focal disease commonly…
Nonspecific Interstitial Pneumonia Jud W. Gurney, MD, FACR Tan-Lucien H. Mohammed, MD, FCCP Key Facts Terminology 1 of the idiopathic interstitial pneumonias, less common than idiopathic pulmonary fibrosis (IPF), but…
Diffuse Alveolar Hemorrhage Tan-Lucien H. Mohammed, MD, FCCP Key Facts Terminology Classifications based on immune status, immune complexes, histology, or presence of glomerulonephritis (pulmonary-renal syndrome) Imaging Findings CT patterns nonspecific;…
Hypersensitivity Pneumonitis, Chronic Jud W. Gurney, MD, FACR Key Facts Terminology Chronic granulomatous lung disease caused by inhalation of variety of organic and chemical antigens Imaging Findings Ground-glass opacities +…
Hypersensitivity Pneumonitis, Acute-Subcute Jud W. Gurney, MD, FACR Key Facts Terminology Diffuse granulomatous interstitial lung disease caused by inhalation of various antigenic particles (microbes, animal proteins, and low-molecular weight chemicals)…
Asbestosis Helen T. Winer-Muram, MD Key Facts Terminology Interstitial lung disease due to inhalation of asbestos fibers Imaging Findings Morphology: Fibrosis centered on respiratory bronchioles Lung cancer: Lower zone predominance…
