Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest demonstrates decreased lung volumes when compared to study obtained the day prior . Increased perihilar markings may be likely due to decreased lung volumes . No pleural effusion , focal consolidation or pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size is normal . Imaged osseous structures are intact .
    OUTPUT:
    
Decreased lung volumes when compared to the study obtained the day prior . Perihilar vascular congestion , unchanged .