Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is linear right basilar opacity which is most likely atelectasis . There there is a suspected pleural effusion on the right . Elsewhere , lungs are clear . The cardiomediastinal silhouette is within normal limits . Atherosclerotic calcifications noted at the aortic arch . Compression deformity in the lower thoracic spine was seen on prior as well .
    OUTPUT:
    
Right basilar atelectasis and suspected small pleural effusion , similar compared to prior exam .