| Discussion: |
-Foregut duplication cyst
-Pericardial cysts (differential by location)
Bronchogenic cysts most commonly mediastinal - precarinal, paratracheal, retrocardiac
Usually incidental in adults, but if large can present in childhood with stridor or dysphagia from mass effect on the trachea or esophagus.
Imaging features: Sharply marginated, cystic with water or soft tissue density if higher protein content. No enhancement. Low T1, High T2 on MRI.