Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . There is persistent blunting of the left lateral costophrenic angle , which could be due to scarring . The lungs are clear of focal consolidation . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormality is identified .
    OUTPUT:
    
No definite acute cardiopulmonary process .