Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is moderate to severely enlarged . The aorta is tortuous . The cardiac , mediastinal and hilar contours appear stable . Fullness of pulmonary vessels in the upper zones suggests background pulmonary venous hypertension . The lungs appear clear . There is no pleural effusion or pneumothorax . There has been no definite change .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .