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 available chest examination of ___ . The heart size is within normal limits . No configurational abnormalities are identified . The thoracic aorta is mildly widened and elongated , but does not demonstrate any local contour abnormalities or wall calcifications . The pulmonary vasculature is not congested . No signs of acute or chronic parenchymal infiltrates are present and the lateral and posterior pleural sinuses are free . No pneumothorax in the apical area . Skeletal structures of the thorax grossly unremarkable . On the previous examination of ___ the patient was postoperative and had bibasilar plate atelectasis but no other significant pulmonary or cardiovascular abnormalities .
    OUTPUT:
    
Normal chest findings , no cardiac enlargement , pulmonary congestion or acute pulmonary parenchymal infiltrates .