Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Lungs are well expanded , with linear bibasilar opacities compatible with scarring , unchanged . No focal consolidation , pleural effusion or pneumothorax is present . There is no pulmonary vascular congestion . No free air is noted under the diaphragms . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .