Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views have been obtained with patient upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . The , on previous examination , identified parenchymal infiltrates in the left lower lobe posterior segment have disappeared completely . No new abnormalities are identified . Previously noted probably old scar formations in apical areas , mostly in right apex , have not changed significantly . They most likely represent old specific scar formations . No new abnormalities are seen .
    OUTPUT:
    
Resolution of left lower lobe pneumonic infiltrate .