Collagen vascular disease (CVD) can cause a variety of lung abnormalities, including usual interstitial pneumonia, nonspecific interstitial pneumonia, organizing pneumonia, diffuse alveolar damage, lymphoid interstitial pneumonia, bronchiectasis, constrictive bronchiolitis, follicular bronchiolitis, alveolar hemorrhage, pulmonary hypertension, and drug-induced lung disease. The frequency of each lung disease is different among underlying CVDs. Although high-resolution computed tomography (HRCT) findings of lung disease are often nonspecific, there are some characteristic HRCT findings for some lung diseases based on pathologic findings.
From the *Department of Radiology, University of Colorado Health Sciences Center, Denver, CO; †Department of Radiology, National Jewish Center for Immunology and Respiratory Medicine, Denver, CO; ‡Department of Medicine, National Jewish Center for Immunology and Respiratory Medicine, Denver, CO; and §Department of Pathology, University of Colorado Health Sciences Center, Denver, CO.
Reprints: Dr Nobuyuki Tanaka, Department of Radiology, Yamaguchi University School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan (e-mail: firstname.lastname@example.org).