Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from ___ . Linear opacity is again seen in the right mid lung , suggestive of atelectasis versus scar . The lungs are otherwise clear . There is no effusion . Cardiomediastinal silhouette is within normal limits . Osseous and soft tissue structures are again notable for degenerative changes at the right acromioclavicular joint .
    OUTPUT:
    
No acute cardiopulmonary process .