Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Linear opacity in the right upper lung is again seen , potentially scarring or atelectasis . The lungs are otherwise clear . Cardiomediastinal silhouette is stable . Previously seen left PICC is no longer visualized . Degenerative changes are seen at the shoulders bilaterally .
    OUTPUT:
    
No definite acute cardiopulmonary process .