Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest are compared to previous exam from ___ . Again seen is elevation of the left hemidiaphragm with eventration posteriorly as previously seen . Streaky right basilar opacity suggestive of atelectasis versus scarring . Elsewhere , the lungs are clear . The cardiomediastinal silhouette is unchanged . Extensive degenerative and potentially post-traumatic changes seen at the left humerus .
    OUTPUT:
    
No definite acute cardiopulmonary process .