Axial CT shows a cystic paraspinal mass adjacent to the esop | Figure 1

CincyKidsRad
Cincinnati Children's Radiology

Axial CT shows a cystic paraspinal mass adjacent to the esophagus. The cystic appearance is typical of a foregut duplication cyst. In the chest, duplication cysts may be a bronchogenic cyst or an esophageal duplication cyst. It is not possible to distinguish between these entities on imaging. #FridayQuizDay


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Axial CT shows a cystic paraspinal mass adjacent to the esophagus. The cystic appearance is typical of a foregut duplication cyst. In the chest, duplication cysts may be a bronchogenic cyst or an esophageal duplication cyst. It is not possible to distinguish between these entities on imaging. #FridayQuizDay


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Coronal contrast-enhanced chest CT shows the rounded mass (arrow) of the left lower lobe. The mass has fluid attenuation with a thin enhancing rim and mild internal complexity. At resection, this was confirmed to be a bronchogenic cyst. Bronchogenic cysts are the most common type of foregut duplication cyst. They are usually asymptomatic and found incidentally. They are often resected due to the risk of infection and rarely, malignant degeneration. On the chest x-ray, the differential diagnosis includes round pneumonia and a duplication cyst.
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