Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Linear opacities in the left mid and lower lung suggestive of scarring . There is mild elevation of the left hemi diaphragm and blunting of lateral costophrenic angle likely due to scarring or pleural thickening . Elsewhere , the lungs are clear . The cardiomediastinal silhouette is normal . No acute osseous abnormalities detected .
    OUTPUT:
    
No acute cardiopulmonary process .