Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta remains mildly tortuous with atherosclerotic calcifications noted at the knob . Mediastinal and hilar contours appear unchanged . Lungs are hyperinflated . Pulmonary vasculature is not engorged . Scarring within the lung apices is similar . Mild bronchiectasis is again noted within the lung bases , better appreciated on the previous CT . New bibasilar patchy opacities are demonstrated along with increased small bilateral pleural effusions . No pneumothorax is seen . Mild to moderate degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
Increased small bilateral pleural effusions with patchy bibasilar airspace opacities which may be due to infection .