Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of cardiac silhouette is unchanged . Mediastinal and hilar contours are stable with atherosclerotic calcification of the aortic knob is re - demonstrated . Linear scarring within the left upper lobe is unchanged . Lungs remain hyperinflated with evidence of emphysema most pronounced in the lung apices . Mild interstitial pulmonary edema persists . No focal consolidation , pleural effusion or pneumothorax is identified . Diffuse demineralization of the osseous structures is present . No subdiaphragmatic free air is present .
    OUTPUT:
    
Mild interstitial pulmonary edema . Emphysema . No subdiaphragmatic free air is identified .