Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly , possibly slightly increased from ___ . No rib fracture seen on limited assessment . No CHF , focal infiltrate or effusion detected . Mild upper zone redistribution again noted . The azygos vein measures 9 .7 mm .
    OUTPUT:
    
Again seen is moderate cardiomegaly . This is slightly more pronounced than on ___ and somewhat more globular , but similar to 1 day earlier . Upper zone redistribution , without overt CHF .