Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest PA and lateral radiograph demonstrates unchanged cardiomediastinal and hilar contours . No overt pulmonary edema is evident though chronic mild interstitial abnormalities are stable . Faint opacification projecting over the left mid lung may represent developing infectious process . There is no definitive correlate on the lateral radiograph . No pleural effusion or pneumothorax present . Mild separation of superior aspect of sternotomy line with intact sternotomy sutures .
    OUTPUT:
    
Faint increased opacification in left mid lung may indicate developing infectious process . Could further evaluate with right anterior oblique view to further evaluate lung .