Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . There is linear scarring in the right perihilar region . The lungs appear clear otherwise . Cardiomediastinal silhouette appears normal aside from an unfolded thoracic aorta . No effusion or pneumothorax . Bony structures are intact .
    OUTPUT:
    
No acute intrathoracic process . Linear scar in the right perihilar region .