Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are probably hyperinflated . A left - sided pacemaker is present , with lead tips over right atrium and right ventricle . The tip of the RV lead extends very minimally beyond the edge of the film . The cardiomediastinal silhouette is grossly unchanged . Prominence of the pulmonary arteries with a tapered appearance is suggestive of pulmonary hypertension . Compared to 1 day earlier , upper zone redistribution appears improved . No CHF . Equivocal minimal blunting of left costophrenic angle and bibasilar atelectasis . No focal infiltrate identified to confirm pneumonia . Probable degenerative changes in both glenohumeral joints , not fully evaluated on this examination .
    OUTPUT:
    
Bibasilar atelectasis similar to 1 day earlier . No focal infiltrate detected to confirm pneumonia . Suspect background COPD / pulmonary hypertension .