Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . There are linear bibasilar opacities . Superiorly , the lungs are clear . There is no effusion or pulmonary vascular congestion . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormality is identified .
    OUTPUT:
    
Linear bibasilar opacities most suggestive of atelectasis versus scarring . Otherwise , unremarkable chest x-ray .