Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear left basilar opacity is most consistent with atelectasis . Cardiomediastinal and hilar contours are unremarkable . The aorta is somewhat tortuous . There is no pneumothorax , pleural effusion , or consolidation
    OUTPUT:
    
1 . No pneumonia . 2 . Normal appearance of the cardiac silhouette .