Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Heart size is normal . Mediastinal contour is unremarkable . Fullness of the right hilum likely reflects known lung cancer . Mild upper zone pulmonary vascular redistribution suggests mild pulmonary vascular congestion . Coarse interstitial opacities are noted in the lung bases which may reflect chronic interstitial abnormality . Additionally , more focal opacity is seen within the periphery of the right lung base , a nonspecific finding . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities seen .
    OUTPUT:
    
1 . Fullness of the right hilum likely reflects known lung cancer . 2 . Coarse interstitial opacities within the lung bases may reflect chronic interstitial lung disease . 3 . More focal opacity periphery of the right lung base is nonspecific and could reflect an area of infection or infarction in the correct clinical setting . 4 . Mild pulmonary vascular congestion .