Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is hyperinflation suggesting background COPD . Heart size is at the upper limits of normal or minimally enlarged , unchanged . There is equivocal minimal upper zone redistribution , without overt CHF . There is no focal consolidation , pleural effusion , or pneumothorax . The patient is status post C6 - T1 spinal fusion with unchanged appearance of the hardware .
    OUTPUT:
    
Equivocal minimal upper zone redistribution without overt CHF . No focal opacity or consolidation to suggest pneumonia .