Constrictive Bronchiolitis Obliterans: The Fibrotic Airway Disorder

Gary R. Epler


Expert Rev Resp Med. 2007;1(1):139-147. 

In This Article

Radiologic Features

The routine chest radiograph is generally of minimal value in CB obliterans as the films are usually normal or may show slight hyperinflation. High-resolution chest CT scans are helpful for establishing a diagnosis of CB by showing a mosaic pattern of pulmonary lobules of increased and decreased lung density, and air trapping.[58] Bronchiectasis and bronchiolectasis are also seen. The expiratory image showing air trapping is useful for establishing a diagnosis of post lung-transplant BOS, but this single finding is not useful for early detection.[59] However, a composite CT score, which includes bronchiectasis, mucus plugging, airway wall thickening, consolidation, mosaic pattern during inspiration and air trapping during expiration, correlates with FEV1 and indicates a potential means of early detection.


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