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 ___ ___ . Heart size remains normal . Unremarkable appearance of thoracic aorta and mediastinal structures . The on previous examination identified parenchymal densities in the periphery of the left upper lobe lingula bordering the lateral heart border is clearly regressed . The same holds for the previously identified suspicious hazy densities in right middle lobe and left lower lobe . Presently there is thus no evidence of any acute ongoing parenchymal process . However , patient 's general appearance with low positioned flattened diaphragms , hypertranslucent lung bases and multiple linear interstitial increased markings are consistent with rather advanced COPD . No pneumothorax is identified .
    OUTPUT:
    
Resolution of previously identified episode with multifocal infiltrates one month ago .