Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post coronary artery bypass graft surgery . The cardiac , mediastinal and hilar contours appear unchanged including cardiac enlargement and unfolding of the thoracic aorta . There is no pleural effusion or pneumothorax . The lungs appear clear . There is a non-united fracture of the surgical neck of the humerus with attenuation of the humeral head and mild foreshortening , but already present on remote prior radiographs .
    OUTPUT:
    
No evidence of acute disease .