Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The inspiratory lung volumes are appropriate . The lungs are clear without focal consolidation concerning for pneumonia , pleural effusion , or pneumothorax . Mild biapical pleural thickening is symmetrical . The pulmonary vasculature is not engorged . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits with mild unfolding of the thoracic aorta and mild calcification of the aortic knob , which is unchanged . The trachea is midline . The visualized upper abdomen is unremarkable . Multilevel degenerative changes are noted throughout the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .