Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again noted is bilateral lower lobe peribronchial wall thickening , compatible with chronic obstructive airways disease . Minimal opacity in the right lower lobe could represent subsegmental atelectasis or possibly early pneumonia . The heart is normal in size . There are changes of coronary artery bypass grafting with median sternotomy wires , mediastinal clips , vessel markers and LAD / RCA coronary stents .
    OUTPUT:
    
1 . Chronic obstructive airways disease . 2 . Right lower lobe subsegmental atelectasis or potentially early pneumonia in the appropriate settin .