case_images: PMC7725561_01
case_images: CT scan demonstrating ill-defined fluid collection in the superior mediastinum (arrow).
case_images: CRIC2020-7431726.001.jpg
case_images: PMC7725561_01_CRIC2020-7431726.001.jpg
case_images: fig1
case_images: Stat electrocardiogram and bedside echocardiogram were unremarkable, and a CT scan demonstrated an ill-defined fluid collection present in the superior mediastinum (Figure 1).
case_images: Aberrant right subclavian artery coursing posterior to the trachea and esophagus (arrow).
case_images: CRIC2020-7431726.002.jpg
case_images: PMC7725561_01_CRIC2020-7431726.002.jpg
case_images: fig2
case_images: While a hematoma and a mass were both considered to be in the differential diagnosis, the CT scan also made note of an aberrant right subclavian artery (ARSA) coursing posterior to the trachea and esophagus (Figure 2).