Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky opacities at the left costophrenic angle are thought to be due to atelectasis . The lungs are otherwise clear . The cardiomediastinal silhouette is within normal limits for technique . Contour irregularities of the lower left lateral ribs suggest fractures , age indeterminate .
    OUTPUT:
    
Left lower lateral rib fractures which could be old however clinical correlation is suggested . Otherwise , essentially unremarkable chest x-ray .