Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low compared to the prior study . There is prominence of interstitial markings bilaterally likely due to pulmonary vascular congestion . There is no focal consolidation or pneumothorax . The left basilar opacity is likely due to atelectasis as no pleural effusion is visible on the lateral projection . There is mild cardiomegaly . The left hilar contour is enlarged likely due to an enlarged pulmonary artery . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Mild new pulmonary vascular congestion and left basilar atelectasis .