Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal upright view of the chest was obtained portably . Low lung volumes result in bronchovascular crowding . There is bibasilar atelectasis . There is no focal consolidation , pleural effusion or pneumothorax . Pulmonary vasculature is normal allowing for lung volumes . Heart size is upper limits of normal . The dual - chamber pacemaker leads end in the expected locations of the right atrium and right ventricle . Mediastinal and hilar contours are normal .
    OUTPUT:
    
No pneumonia , edema or effusion . Bibasilar atelectasis .