Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Moderate to severe enlargement of the cardiac silhouette is unchanged , with a slightly globular configuration . The aorta is tortuous and diffusely calcified . Mild pulmonary vascular congestion is unchanged . No focal consolidation , pleural effusion or pneumothorax is seen . Patchy opacities in the lung bases are not substantially changed in the interval , potentially atelectasis , but infection or aspiration can not be excluded . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . No substantial interval change from the prior exam obtained earlier in the day . Mild pulmonary vascular congestion with patchy opacities in lung bases , potentially atelectasis , but infection or aspiration can not be excluded . 2 . Moderate to severe enlargement of the cardiac silhouette with a somewhat globular configuration raises the possibility for the presence of a pericardial effusion and consider echocardiography for further assessment .