Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ , the appearance is similar . Right ___- , supra - , and infrahilar patchy opacities may be very slightly more pronounced . Mild retrocardiac opacity is unchanged . Faint opacity previously seen in the left mid zone is slightly improved . No gross effusion is identified . The cardiomediastinal silhouette is grossly unchanged .
    OUTPUT:
    
Mild CHF . Possibility of superimposed infectious / inflammatory infiltrates can not be excluded , particularly given asymmetry in appearance between the right and left lungs . The differential diagnosis includes PCP ___ . No gross effusion .