Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to prior exam , there has been no significant interval change . Right basilar opacity is compatible with pleural effusion with adjacent atelectasis noting that infection can not be excluded . There is mild pulmonary edema . Left chest wall dual lead pacing device is again noted . Cardiac silhouette is difficult to assess but it appears at least moderately enlarged . Atherosclerotic calcifications seen at the arch .
    OUTPUT:
    
Right basilar opacity due to effusion and atelectasis , infection not excluded . Mild pulmonary edema .