Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right subclavian artery stent is again seen . Unchanged calcific densities projecting over the apices bilaterally could represent vascular calcification . Normal heart size . Normal mediastinal and hilar contours . New retrocardiac opacity and decreased left lung volume is consistent with left basilar atelectasis . Linear opacities at the left base likely reflect subsegmental atelectasis . Right lung is clear . No pneumothorax . No evidence of pneumonia .
    OUTPUT:
    
New , left basilar atelectasis in the setting of recent surgery .