Characterized paraesophageal cystic lesion. Patient with encephalitis. CHEST:LUNGS AND PLEURA: No significant abnormality noted.MEDIASTINUM AND HILA: In the high right posterior mediastinum there is a 1.4 x 1.1 x 2.3 cm T2 hyperintense well-defined lesion, unchanged, adjacent to the vertebral body which is normal in morphology. Postcontrast characteristics cannot be evaluated as contrast was not administered. No communication with the neuroforamen. CHEST WALL: No significant abnormality noted.
1.4 x 1.1 x 2.3 cm high right posterior mediastinal T2 hyperintense well-defined lesion, likely a simple cystic lesion (although contrast was not administered) such as an duplication or neuroenteric cyst.