Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lordotic positioning . There is mild to moderate cardiomegaly , with a tortuous aorta . There is upper zone redistribution and mild vascular blurring , which could reflect mild CHF . Minimal subsegmental bibasilar atelectasis . No focal consolidation or gross effusion . Slight blunting of the costophrenic angles could be present . No pneumothorax detected .
    OUTPUT:
    
Mild to moderate cardiomegaly , similar to prior . Mild vascular plethora could reflect early CHF . Trace blunting noted at both costophrenic angles . Bibasilar atelectasis . No discrete pneumonic infiltrate or frank consolidation identified .