Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Relatively low lung volumes seen with linear bibasilar opacities , potentially due to atelectasis . Superiorly , the lungs are clear . There is no effusion . The cardiomediastinal silhouette is within normal limits . Median sternotomy wires are noted . No acute osseous abnormality is identified .
    OUTPUT:
    
Low lung volumes with streaky bibasilar opacities , most likely atelectasis . Otherwise , no acute cardiopulmonary process .