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 ___ . Previously described advanced COPD findings persist . Remarkable is a significant progression of parenchymal infiltrates in the left upper lobe area where dense chronic scar formations and bronchiectatic changes were observed earlier . There are no other new pulmonary or cardiac abnormalities observed on this followup chest examination .
    OUTPUT:
    
Marked local progression of parenchymal densities in the left upper lobe apical area consistent with acute infection . Short followup after treatment is recommended ( approx . one week ) . Referring physician ___ paged at 4 :20 p .m .