Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is markedly enlarged . A dual - lead pacemaker device has leads terminating in the right atrium and ventricle , respectively . There is mild unfolding and patchy calcification along the aorta . Although there is a mild upper zone redistribution suggested among upper lobe pulmonary vessels , suggesting pulmonary venous hypertension , there is no frank evidence for congestive heart failure . No focal opacity is identified . There is no pleural effusion or pneumothorax . Mild degenerative changes are present along the lower thoracic spine . Two thoracolumbar vertebral bodies show a very mild and probably chronic anterior wedging .
    OUTPUT:
    
No evidence of acute disease . Marked cardiomegaly .