Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . There is no focal consolidation , effusion , or pneumothorax . Cardiac silhouette appears mildly enlarged . The mediastinal contour is unremarkable aside from a mildly unfolded thoracic aorta . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Mild cardiomegaly without superimposed edema or pneumonia .