Probable cardiomegaly and prominence of the superior mediastinum, which may be accentuated by patient rotation. The possibility of aortic pathology, such as intramural hematoma or dissection, cannot be excluded and warrants further evaluation with PA and lateral chest radiographs or a computed tomography angiography (CTA) if clinically indicated.
Superior mediastinal mass (Uncertain) Cardiomegaly (Uncertain)