Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . The lungs are clear without focal consolidation , effusion or pulmonary vascular congestion . Biapical scarring is noted with superior retraction of the hila , particularly on the right . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute cardiopulmonary process .