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Connective tissue disease-related pulmonary fibrosis showing exuberant honeycombing sign in a 57-year-old woman with rheumatoid arthritis. (a, b) Lung window images of CT scans obtained at levels of right inferior pulmonary vein (a) and suprahepatic inferior vena cava (b), respectively, show extensive honeycombing in lower lung zones. Also note pericardial effusion (PE) and cardiomegaly.
