Presentation
Mild chest pain.
Patient Data
large cystic middle and posterior mediastinal lesion
splaying of the carina
separate from vertebral borders and heart contour
clear lungs
-
confirms a middle and posterior mediastinal lesion
located immediately below the carina
splaying of the carina and mass effect on the right main bronchus
non-calcified
cystic with no solid components
imperceptible very thin wall
Case Discussion
Findings in this case are most consistent with a bronchogenic cyst. Esophageal duplication cyst and atrial pericardial cyst are also reasonable differential diagnoses. The immediate subcarinal location and imperceptible thin wall are features in support of bronchogenic cyst.