Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate persistent although improved areas of opacification in the bilateral upper lobes ( left greater than right ) , as well as left lower lobe . There is left lower lobe atelectasis as well . The aorta is tortuous . The cardiomediastinal and hilar contours are stable . There is no pneumothorax , consolidation , or pleural effusion .
    OUTPUT:
    
Improving areas of opacification in the bilateral upper lobes ( left greater than right ) , as well as left lower lobe .