CTICasesConstrictive Bronchiolitis in Rheumatoid Arthritis
Imaging findings
High-resolution CT chest shows diffuse mosaic perfusion with severe, geographic air trapping on expiratory scans, associated with mild bronchial wall thickening, in a patient with rheumatoid arthritis and progressive dyspnea.
Key takeaways
Constrictive bronchiolitis (bronchiolitis obliterans) is a severe, progressive, obstructive lung disease associated with rheumatoid arthritis. Radiologically, it is characterized by mosaic attenuation and marked air trapping on expiration, which represents bronchiolar lumen obliteration by submucosal fibrosis.
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