Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Multiple patchy opacities at the lung bases are stable since the prior study , likely reflecting areas of atelectasis . There is no pleural effusion or pneumothorax . The heart size is mildly enlarged . Aorta is noted to be extremely tortuous .
    OUTPUT:
    
No convincing evidence of acute cardiopulmonary process .