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 . The pulmonary vasculature is not engorged . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits . Mild calcification of the aortic knob is re - demonstrated . A mid thoracic vertebral compression fracture deformity is unchanged from ___ .
    OUTPUT:
    
1 . No acute intrathoracic process , specifically no pneumonia . 2 . Chronic mid thoracic spine compression fracture .