Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are clear without consolidation or effusion . Mild biapical scarring is noted . Slightly coarse interstitial markings seen , particularly on the right laterally . Blunting of the left lateral costophrenic angle may be due to a underlying pleural scarring or thickening . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process . Coarse interstitial markings raising the possibility of chronic underlying interstitial process . No overt edema nor effusion .