Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are within normal limits . The trachea is central . The cardiomediastinal contour is normal . There is moderate atherosclerotic calcification in the aortic arch . The hila appear mildly prominent but no pulmonary vascular congestion is appreciated . No consolidation , pneumothorax or pleural effusion seen .
    OUTPUT:
    
No acute cardiopulmonary process seen .