Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . The aorta remains tortuous . Mediastinal and hilar contours are otherwise unchanged . Pulmonary vasculature is not engorged . No focal consolidation , pleural effusion or pneumothorax is seen . There is mild elevation of the left hemidiaphragm which is unchanged . Minimal atelectasis is seen in the left lung base . Mild degenerative changes are noted in the thoracic spine
    OUTPUT:
    
No acute cardiopulmonary abnormality .