Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest demonstrates lower lung volumes on the current exam . Bibasilar opacities , right greater than left , may be due to secondary atelectasis . Superiorly , the lungs are clear and the cardiomediastinal silhouette is within normal limits . No acute osseous abnormality is identified noting severe degenerative changes at the left shoulder .
    OUTPUT:
    
Low lung volumes without definite acute cardiopulmonary process . Consider repeat two - view chest x-ray with improved aeration for better evaluation .