Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes remain low on the right side with a presumed right pleural effusion . There is associated atelectasis and superimposed infection can not be excluded . There is a new , smaller left - sided pleural effusion . The bilateral upper lobes appear grossly clear . Assessment of the cardiomediastinal contour is limited . Vascular calcification in the thoracic aorta and mitral valve again noted . No pneumothorax seen .
    OUTPUT:
    
Right basal pleural effusion with associated compressive atelectasis . Superimposed infection can not be excluded . Small left pleural effusion .