Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . The heart size is normal . No configurational abnormalities identified . Thoracic aorta of ordinary ___ . No wall calcification or local contour abnormalities are seen . 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 . Skeletal structures of the thorax are grossly within normal limits . No pneumothorax identified in the apical area on the frontal views . Our records do not include a previous chest examination available for comparison .
    OUTPUT:
    
Normal chest findings . No evidence of cardiac enlargement , pulmonary congestion , or acute infectious process in lungs , pleura , or mediastinal structures . No pneumothorax .