Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen are bibasilar opacities , left greater than right , slightly progressed on the left , likely atelectasis . No pleural effusion . No pneumothorax . Left - sided AICD device is again seen and unchanged . Mildly enlarged heart is again seen and unchanged . Mild pulmonary vascular congestion is unchanged and is chronic . Mediastinal clips are unchanged . Elevation of the right hemidiaphragm is chronic .
    OUTPUT:
    
Bibasilar patchy opacities , left greater than right slightly progressed from prior study on the left , likely atelectasis . Unchanged cardiomegaly and chronic pulmonary vascular congestion .