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. 2019 Dec 6;3:41. doi: 10.21037/med.2019.11.01

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2019 Mediastinum. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0/.

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A 58-year-old man with newly diagnosed prevascular mediastinal mass. Unenhanced chest CT demonstrates a spherical 2.7×1.8 cm ovoid well-demarcated soft tissue mass (arrow in A) in the prevascular mediastinum, abutting the ascending aorta (Ao) but separated from it by a sliver of fat. The pleura is normal, but there are two pulmonary nodules. One is benign as it is heavily calcified (arrow in B) and remained stable compared to a CT performed 9 years earlier (arrow in C). The other nodule, in the left lobe (arrow in D), is lobulated, solid left, and not calcified. It gradually grew over the years currently measuring 1.6×1.1 cm in diameter, whereas in a preceding CT performed 4 years earlier it measured 1.4×0.8 cm in diameter (arrow in E), and 9 years prior to the current CT it measured 1.2×0.7 cm in diameter (arrow in F).