Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to prior , given differences in technique , there has been no significant interval change . Low lung volumes are again seen with crowding of the bronchovascular markings . Right basilar opacity is likely in part due to atelectasis although underlying effusion is suspected . Left costophrenic angle is excluded from the field of view . The cardiac silhouette is accentuated by the low lung volumes .
    OUTPUT:
    
Low lung volumes . Right basilar opacity likely components of effusion and atelectasis as seen on prior .