Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Mild pulmonary vascular congestion is slightly increased compared to ___ . There is no pneumothorax or large pleural effusion . Cardiomediastinal silhouette is normal size .
    OUTPUT:
    
Mild pulmonary vascular congestion is slightly increased since ___ . No radiographic evidence of pneumonia .