Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . Heart size , status post bypass surgery and partial sternal resection , remaining sternotomy wire are unchanged . Unchanged appearance of thoracic aorta . No increased pulmonary vascular congestion . Radiographic signs of advanced chronic inflammatory pulmonary disease and emphysema as before . Bullous emphysema in right upper lobe area . The next preceding examination identified acute changes described as two heterogeneous opacities in the right middle lobe area have regressed markedly . The more medially located density that had more the appearance of a pneumonic process has actually resolved . Remaining finding includes a linear atelectasis in the lower border of the right middle lobe , probably representing scar formation . When comparison is extended to examinations dated ___ and ___ , similar episodes of acute parenchymal infiltrates in somewhat different location existed already and had regressed . No new pulmonary abnormalities are seen on the present examination .
    OUTPUT:
    
Advanced COPD and emphysema . Marked regression of acute infiltrates in right middle lobe area . These infiltrates had also been documented on a chest CT dated ___ .