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 ___ . Comparison suggests mild regression of heart size and thymus , simultaneously lesser marked perivascular haze in the pulmonary circulation compatible with dehydration in patient previously suffering from fluid overload . The previously identified local suspicious hazy densities in the right mid lung field and lower lobe area as well as left upper lobe area have all regressed and suggest improvement of the previously identified multifocal densities suspicious to constitute exacerbation of the patient 's chronic COPD status . No new parenchymal abnormalities are seen . The lateral and posterior pleural sinuses remain free as they were before .
    OUTPUT:
    
Improvement of previously diagnosed exacerbation of COPD , patient with multiple focal parenchymal infiltrates . The present chest findings are similar to what was noted on a more remote examination of ___ .