Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to exams over the past few days , there has been interval improvement of the opacity at the right lung base . There is no effusion or pulmonary edema . Cardiac silhouette is mildly enlarged . No acute osseous abnormalities .
    OUTPUT:
    
Overall improvement in the appearance with decreased conspicuity of the opacity at the right lung base .