Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left chest wall pacemaker is present with leads in the right atrium and ventricle . There is prominence of interstitial markings throughout the lungs which may represent pulmonary edema or alternatively chronic interstitial lung disease . No prior studies are available for comparison . There is a linear patchy opacity in the left lower lung zone which likely represents focal atelectasis . Blunting of right costophrenic angle may be due to a small pleural effusion or scarring . No pneumothorax . Median sternotomy wires are intact .
    OUTPUT:
    
1 . Prominent interstitial markings which may represent pulmonary edema or alternatively chronic lung disease . No prior studies are available for comparison . 2 . Right lower lobe atelectasis and possible small right pleural effusion or scarring .