Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . Mild unfolding of the thoracic aorta appears similar . There are new patchy opacities in the left lower lung , probably within the lingula and vague streaky right upper lung opacities . These could be seen in association with lower airway infection or inflammation . It is also difficult to exclude bronchopneumonia . There is no pleural effusion or pneumothorax . Mild degenerative changes are similar along the thoracic spine . Slight subpleural thickening at each lung apex is also stable .
    OUTPUT:
    
Vague opacities in the right upper and left lower lungs , which potentially are due to an infectious etiology or possibly inflammation of airways . An atypical pattern of mild pulmonary congestion would be a lesser differential consideration based on the distribution but could be considered .