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Bronchogenic Cyst - Foregut Malformation Spectrum

Case Detail

Anatomy: Chest
Joseph Junewick, MD FACR
Diagnostic Category: Developmental or Congenital
Created: over 9 years ago
Updated: over 9 years ago
Tags: PEDS
Modality/Study Types: CT
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3 month old with prenatal history of thoracic mass.

Case Images


Bronchogenic Cyst


CT – Round thin walled fluid attenuation left lower lober pulmonary mass contiguous with the aorta and esophagus.


Bronchogenic cysts are developmental lesions resulting from abnormal ventral budding or branching of the tracheobronchial tree, which occurs between the 26th and 40th days of gestation. Bronchogenic cysts are part of spectrum of foregut malformations consisting of bronchogenic cysts, enteric cysts, and neurenteric cysts. It is termed a bronchogenic cyst when respiratory epithelium is present. Bronchogenic cysts typically occur in the middle mediastinum although can also manifest as pulmonary lesions, particularly within the lower lobes. When bronchogenic cysts are small, affected patients are usually asymptomatic; however, when the lesions are large enough to apply substantial mass effect on adjacent structures. Treatment options include observation, resection, and aspiration. Characteristically bronchogenic cysts are well-circumscribed round or ovoid solitary lesions with uniform fluid attenuation on CT images (many will be of higher density because of proteinaceous content).


Lee EY, Boiselle PM and Cleveland RH. Multidetector CT Evaluation of Congenital Lung Anomalies. Radiology (2008); 247:632-648.

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