Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated , with possible mild background hyperinflation . No CHF , focal infiltrate , effusion or pneumothorax is detected . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are within normal limits , allowing for slight unfolding of the aorta . Cervical fusion hardware is noted , with degenerative changes noted in the lower cervical spine . Note is made of rudimentary left - greater - than - right C7 cervical ribs . Degenerative changes are seen at the left glenohumeral joint . Narrowing of the acromial humeral distance on the left raises the possibility of rotator cuff thinning and / or tearing . Degenerative changes of the right glenohumeral joint can not be excluded , but , if present , are probably less pronounced than on the left .
    OUTPUT:
    
No acute pulmonary process detected .