PMC9632998_01
CT scans done in June 2021 showing a large lobulated hypodense mass lesion. Red arrow indicates the mediastinal lesion, yellow arrows indicate the extrathoracic chest wall lesion.
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F1
In addition, an enhancing soft tissue mass on the right anterior chest wall indenting the second rib and widening neural foramina was seen (Figure 1).
Panel (A) and (B) are CT scans done pre-operatively on 4/9/2021. Panel (C) is an MRI done pre-operatively on 8/9/2021. The figure shows a large anterior mediastinal mass engulfing the arch of the aorta and its branches. Red arrows indicate the mediastinal lesion, yellow arrow indicates the extrathoracic chest wall lesion.
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F2
The enhancing soft tissue mass on the right anterior chest wall did not undergo any significant changes (Figure 2).
The arrow in panel (A) pointing at the tumor which is occupying the whole anterior mediastinum with some sutures from previous surgery. Panel (B) showing the arch of the aorta and its branches after the total resection of the intrathoracic tumor (white arrow: brachiocephalic artery, black arrow: left common carotid, yellow arrow: left subclavian artery).
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F3
Figure 3 shows the intraoperative pictures of the mediastinum before and after tumor resection.
A. Mild to moderately cellular tumor (H/E, 4X); B. The biphasic growth pattern is demonstrated with both fibrous (blue arrow) and myxoid (black arrow) areas (H/E, 4X); C. The tumor cells are mostly bland oval to spindle-shaped (H/E, 10X) and stellate (D); (H/E, 10X).
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F4
Mitotic activity was not increased (Figure 4).