Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The aorta is tortuous . The pulmonary vasculature is within normal limits . The mediastinal and hilar contours are normal . Subtle opacity in the right lower lobe is new from the prior exam and may represent an atypical infection . Blunting of the costophrenic angles posteriorly on the lateral view could represent trace pleural effusions or pleural thickening . There is no pneumothorax identified . Note is made of mild rightward tracheal deviation which could be due to an enlarged thyroid .
    OUTPUT:
    
Subtle opacity in the right lower lobe is new from the prior exam and could represent pneumonia . Blunting of the costophrenic angles seen on the lateral view could represent trace pleural effusions or pleural thickening .