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 within normal limits . No typical configurational abnormalities identified . Thoracic aorta of ordinary dimension but a tiny semicircular calcification is seen in the wall of the aortic arch . No local contour abnormalities are identified . 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 gross skeletal abnormalities . No pneumothorax in the apical area on frontal view . Our records do not include a previous chest examination available for comparison .
    OUTPUT:
    
Chest findings within normal limits .