CTICasesBronchial Atresia
Imaging findings
Chest radiograph and CT show a tubular, fluid-filled mucoid impaction (bronchocele) in the left upper lobe, associated with hyperlucency and hyperexpansion of the surrounding lung parenchyma due to collateral ventilation and air trapping.
Key takeaways
Bronchial atresia is a congenital anomaly where a segmental or lobar bronchus lacks communication with the central airway. Mucus accumulates distally, forming a bronchocele. The affected lung parenchyma hyperinflates due to collateral air drift through alveolar pores, presenting as a hyperlucent mass-like lesion.
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