Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . Lungs appear clear aside from a linear density in the left mid lung which is stable and may represent an area of scarring . No effusion or pneumothorax . The cardiomediastinal silhouette is stable . Right shoulder replacement is again noted with right distal clavicular deformity . Old right rib cage deformity is also noted .
    OUTPUT:
    
No acute intrathoracic process .