Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . The heart is moderately enlarged . There is atherosclerotic calcification at the aortic knob . There is no focal consolidation , effusion , or pneumothorax . No definite signs of CHF . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Mild cardiomegaly , otherwise unremarkable .