PMC7090094_01
(A,B) Contrast-enhanced chest CT scan. A thin-walled round mass (antero-posterior to lateral diameter, size 30 x 25 x 40 mm) can be seen at the level of the first five dorsal vertebral somas (from D1 to D5). The mass (yellow arrow) occupies the upper and middle mediastinum, displacing the esophagus posteriorly and the trachea anteriorly. In dynamic acquisitions a marked reduction in the size of the trachea to the middle third is documented. The epiaortic vessels appear to be slightly displaced anteriorly without reduction in size.
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F2
In order to define the extrinsic compression and quantify the tracheal collapse, a dynamic chest CT scan with contrast enhancement was carried out and revealed a 4.0 cm wide mediastinal mass closely adherent to the anterior profiles of the first five thoracic vertebra, both compressing and dislocating the trachea and esophagus to the front and to the right, respectively (Figures 2A,B).