Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains moderately enlarged . The aorta is tortuous . Lungs are hyperinflated . Pulmonary vasculature is not engorged . Patchy opacities are seen in the lung bases , findings which likely reflect atelectasis . No focal consolidation , pneumothorax , or pleural effusion is present . Moderate degenerative changes are noted throughout the thoracic spine .
    OUTPUT:
    
Patchy opacities in the lung bases are nonspecific but likely reflect atelectasis .