Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest PA and lateral radiograph demonstrates unchanged mediastinal , hilar , and cardiac contours . Bibasilar opacifications are again evident with minimally improved aeration on the left . Overall , radiograph is relatively unchanged compared to scout image obtained as part of a ___ chest CT , at which time , the opacifications were most consistent with atelectasis . No new opacifications evident . A right - sided pacemaker has leads terminating in the right atrium and right ventricle . Abandoned pacer leads are also identified in the left chest . Sternotomy sutures are midline and intact .
    OUTPUT:
    
Bibasilar opacifications , left greater than right . Findings similar to ___ CT , at which point , opacities corresponded with atelectasis .