Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is probable background hyperinflation , suggesting COPD . There is moderate cardiomegaly , overall similar to the prior film . Slight focal prominence of the left heart border superiorly is similar to ___ , allowing for differences in technique , and is consistent with a left atrial appendage . The aorta is calcified and tortuous and could be ectatic , but appears unchanged . There is upper zone redistribution and mild vascular plethora as well as atelectasis at the right base , new compared with ___ . No focal consolidation and no joint effusion is identified .
    OUTPUT:
    
Upper zone redistribution and vascular plethora , with right base atelectasis , consistent with CHF . No focal consolidation is identified , though , in the appropriate clinical setting , an early infiltrate would be difficult to exclude . Moderate cardiomegaly , unchanged . Probable background COPD .