Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . Status post sternotomy and previous bypass surgery with multiple surgical clips in the anterior mediastinum appear unchanged . Moderate cardiac enlargement as before and unchanged appearance of the markedly dilated thoracic aorta unchanged . No evidence of increased pulmonary vascular congestion . The previously described right - sided pleural densities consistent of blunting of the lateral pleural sinus and mild thickening of the pleural space along the lateral view including some accentuated visibility of the minor fissure appear all unchanged . As the appearance of both posterior pleural sinuses as identified on the lateral view is free , it is unlikely , that there is a major amount of free pleural effusion present . No pneumothorax is present in the apical area on the frontal view .
    OUTPUT:
    
Stable chest findings in patient with ectatic thoracic aorta , status post bypass surgery and bilateral pleural scar formations , more on the right than left . There is no conclusive evidence for free pleural effusion .