Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size remains mildly enlarged . The aorta is tortuous and calcified but unchanged . The hilar contours are stable . There is prominence of the right paratracheal stripe which on the prior chest CT from ___ demonstrated this to be secondary to tortuous vessels and mediastinal lipomatosis . New patchy bibasilar airspace opacities are concerning for aspiration or infection . Lateral pleural thickening near the lung bases is stable . No pneumothorax or large pleural effusion is present . Pulmonary vascularity is not engorged . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
Patchy opacities at lung bases concerning for aspiration or infection .