Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is chronic mild pulmonary interstitial abnormality . No focal consolidation . Heart size is top normal , exaggerated by a pectus deformity of the lower sternum . The aorta is tortuous and calcified . No pleural effusions or pneumothorax . Multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
Mild chronic interstitial pulmonary abnormality . No acute process .