Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy . The heart is normal in size . Patchy calcifications are noted along the aortic arch . There is also mild unfolding of the thoracic aorta . A mildly bulging contour along the lower left mediastinum suggests hiatal hernia . The right hemidiaphragm is moderately elevated . Streaky overlying opacities at each lung base suggest minor atelectasis . The upper mediastinum has mildly widened appearance , although this is probably within normal limits for the technique applied .
    OUTPUT:
    
Elevation of the right hemidiaphragm . Apparent mediastinal widening , although probably within normal limits for technique . Suspected hiatal hernia . Correlation with outside imaging is recommended . CT should be considered if prior radiographs are not available to show stability of this appearance and if the chest was not recently imaged following trauma using CT .