The term bronchocele indicates focal bronchial dilatation and is often associated with mucoid impaction and impaired ventilation.
Pathology
Bronchoceles can be congenital (e.g. bronchial atresia) or acquired due to retained secretions or proximal obstruction (e.g. endobronchial tumor) 1.
Radiographic features
CT
Mucoid impaction is common and gives rise to a typical ‘V’ or ‘Y’ branching structure. This has been called the ‘finger in glove’ pattern.
Reduced ventilation and perfusion of the downstream lung results in hypoattenuation and is a characteristic feature of bronchial atresia.
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