Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is at the upper limits of normal . The aorta is calcified and slightly unfolded . There is some patchy increased opacity in the retrocardiac region an the possibility of an early left lower lobe infiltrate would be difficult to exclude . Possible slight opacity in this area on the lateral view from ___ . Minimal blunting of the right costophrenic angle . No overt CHF and no gross effusion . There is mild prominence of the right hilum , similar to the ___ study .
    OUTPUT:
    
1 . . No definite focal infiltrate , though the possibility of an early infiltrate at the left base would be difficult to exclude . 2 . Prominence of the right hilum . If clinically indicated , further assessment with chest CT could help to assess for any underlying lymphadenopathy .