Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrateswell expanded lungs with left lower lobe atelectasis . No pleural effusion or pneumothorax . Heart is mildly enlarged , unchanged from previous examination . Tortuous aorta is noted . Mediastinal contour , and hila are otherwise unremarkable . Limited assessment of the upper abdomen is within normal limits .
    OUTPUT:
    
1 . Stable mild cardiomegaly with tortuous aorta . 2 . No pneumonia .