PMC7306610_01
CT-Scans of the thorax: A. Axial view and B. Sagittal view showing less than 5 mm residual tracheal lumen (1.) due to an endotracheal metastasis (2.) on the level of aortic arch (3.). 4. and 5. denote the vertebra and the sternum, respectively. 6. and 7. show the tracheal lumen above the obstruction and the lungs parenchyma, respectively.
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PMC7306610_01_gr1.jpg
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The immediately performed computed tomographic (CT) view of the chest revealed a severe occlusion of the tracheal lumen at the level of the aortic arch with a high density and homogeneous content (see Fig. 1).