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Chest radiograph of a pediatric patient with bronchiectasis

Chest radiograph of a pediatric patient with bronchiectasis
The airways are dilated and thickened, as indicated by parallel linear opacities (tram-tracking) when seen longitudinally and ring shadows on cross-section (arrows).
Courtesy of Khoulood Fakhoury, MD, and Adaobi Kanu, MD.
Graphic 56034 Version 4.0