Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The mediastinal contours are normal . The pulmonary vasculature is normal . The pulmonary vasculature is mildly engorged . The right hilus is enlarged from the prior exam . The left hilus appears normal . The lungs are hyperinflated . There is no pneumothorax . Blunting of the right costophrenic angle may suggest a small right pleural effusion .
    OUTPUT:
    
1 . Mild pulmonary vascular engorgement . 2 . Enlargement of the right hilus compared to the most recent prior exam . This could reflect pulmonary arterial hypertension , but recommend chest CT for further assessment . 3 . Possible small right pleural effusion .