Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Analysis is performed in direct comparison with the next preceding similar study with patient in supine position dated ___ . The patient remains intubated , the ETT terminating less than 2 cm above the level of the carina . The position is unchanged . The Swan - Ganz catheter still reaches the central portion of the pulmonary artery . Midline sternotomy wires unchanged . NG tube reaching below diaphragm including side port located in stomach . Two mediastinal structures advanced from below as before . No evidence of pneumothorax . Previously identified plate atelectasis in mid portion of right lung appears unchanged . The hazy diffuse densities in right upper lobe suggestive of some infiltrates have cleared up .
    OUTPUT:
    
Some improvement of right upper lobe area infiltrates , stable appearance of plate atelectasis , no new infiltrates and no pneumothorax .