Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged with a left ventricular predominance . The aorta is mildly tortuous . Prominence of the left superior mediastinal contour , superior to the aortic ___ , ___ be due to prominent vessels and / or mediastinal fat . Mediastinal and hilar contours are otherwise unremarkable . The pulmonary vasculature is not engorged . Lungs are clear . No focal consolidation , pleural effusion or pneumothorax is present . Mild degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .