Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Linear bibasilar opacities may be due to atelectasis or scarring . Right mid lung surgical chain sutures are again identified . Superiorly , the lungs are grossly clear . The cardiomediastinal silhouette is stable . Median sternotomy wires are again noted . No acute osseous abnormalities .
    OUTPUT:
    
Linear bibasilar opacities suggestive of atelectasis . Otherwise , unremarkable portable chest x-ray .