Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low . There is increased opacity in the base of the left upper and lower lung compared to prior , likely from atelectasis . There is no focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . Numerous surgical clips are again seen none appear unchanged . Coronary artery stent is again noted .
    OUTPUT:
    
Increased opacity of the left lung base , likely from atelectasis .