Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild left basilar atelectasis . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The cardiac silhouette is top - normal . Mediastinal and hilar contours are unremarkable . Old bilateral rib fractures are again seen . Focal disc space narrowing in the lower thoracic spine is similar to ___ .
    OUTPUT:
    
No acute cardiopulmonary process