Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy with multiple mediastinal clips again noted . The heart remains mildly enlarged . The mediastinal contours are stable , with mild tortuosity of the thoracic aorta again noted . There are mild atherosclerotic calcifications at the aortic knob . New ill - defined opacity are demonstrated within both upper lobes , as well as worsening opacity within the left mid lung field , findings concerning for a multifocal infectious process . Additionally , there is mild pulmonary edema , which may be minimally worse compared to the prior study . Small bilateral pleural effusions , right greater than left , are not substantially changed from the prior exam . Persistent bibasilar airspace opacities are relatively similar from the prior exam , and could reflect areas of atelectasis .
    OUTPUT:
    
New ill - defined areas of opacification in both upper lobes and left mid lung field , concerning for a multifocal infectious process . Mild pulmonary edema appears slightly worse in the interval , with persistent small bilateral pleural effusions . Bibasilar airspace opacities are relatively unchanged , and likely reflect atelectasis .