Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two frontal and two lateral views of the chest . The lungs are hyperinflated but clear of confluent consolidation . Increased interstitial markings are likely due to chronic underlying process . There is no effusion . There is some apical scarring on the left . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormality is detected .
    OUTPUT:
    
Hyperinflation without acute cardiopulmonary process .