Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are chronically hyperexpanded but clear . Mediastinal or subphrenic fat transmitted through an incomplete diaphragm should not be mistaken for lung abnormality . Cardiomediastinal and hilar contours are unremarkable . There is minimal blunting of the right pleural sulcus suggesting small right - sided effusion . No left - sided pleural effusion is seen . No pneumothorax .
    OUTPUT:
    
Chronic small airways obstruction . Dr ___ ___ the findings and modification of original reading by telephone at 9 :05 AM .