Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Top normal heart size is exaggerated by low lung volumes . The cardiomediastinal and hilar contours are normal . The lung volumes are low , with mild bibasilar atelectasis . No pleural effusion or pneumothorax is detected . Mild pulmonary vascular congestion is noted , without overt edema .
    OUTPUT:
    
Low lung volumes , no acute cardiopulmonary pathology .