Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior examination , lung volumes are decreased accentuating the cardiac silhouette and bronchovascular structures . There is prominence of the aortic knob . There are increased interstitial markings with probable mild pulmonary vascular congestion . No large pleural effusion or pneumothorax is identified .
    OUTPUT:
    
Low lung volumes . Mild pulmonary vascular congestion . No large pleural effusion . No focal consolidation .