CTICasesPosterior Mediastinal Bronchogenic Cyst
Imaging findings
Chest radiograph demonstrates a well-circumscribed mass sitting above the aortic arch, which is difficult to visualize on the lateral projection. Chest CT confirms a low-attenuation, well-circumscribed fluid-density posterior mediastinal mass.
Key takeaways
Although posterior mediastinal cysts are often clinically suspected to be neuroenteric cysts, true neuroenteric cysts are exceedingly rare and typically associated with vertebral anomalies. Most cysts discovered in the posterior mediastinum pathologically turn out to be bronchogenic cysts.
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