Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains mildly enlarged . Mediastinal and hilar contours are unremarkable . Lung volumes are low with mild perihilar haziness suggestive of mild pulmonary vascular congestion . No focal consolidation or pneumothorax is present . Minimal blunting of the costophrenic angles bilaterally could suggest trace bilateral pleural effusions . No acute osseous abnormalities detected .
    OUTPUT:
    
Mild pulmonary vascular congestion and possible trace bilateral pleural effusions .