Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged with a left ventricular configuration . The aortic arch is calcified . The right hemidiaphragm is mildly elevated relative to the left . Lung parenchyma shows mild interstitial prominence including cuffed airways but is otherwise clear without focal opacification . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Mildly prominent interstitium which may indicate airway inflammation or mild pulmonary congestion , but no focal opacification to suggest pneumonia .