Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . There is a single lead right - sided pacemaker with distal aspect of the lead not well seen due to underpenetration but grossly , unchanged in position as compared to the prior study . There are relatively low lung volumes which accentuate the bronchovascular markings . There is basilar atelectasis , particularly on the left . No definite focal consolidation is seen . The posterior costophrenic angles are not fully fully included on the lateral view but no large pleural effusion is seen . There is no pneumothorax . The cardiac and mediastinal silhouettes are stable . No overt pulmonary edema is seen .
    OUTPUT:
    
Low lung volumes with likely left basilar atelectasis .