Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in upright position . The heart size is within normal limits . No configurational abnormality is identified . Unremarkable appearance of thoracic aorta . No mediastinal abnormalities are noted . The pulmonary vasculature not congested . No signs of acute or chronic parenchymal infiltrates are present and the lateral pleural sinuses are free . No pneumothorax in apical area . Skeletal structures grossly within normal limits . Our records do not include a previous chest examination available for comparison .
    OUTPUT:
    
Chest findings within normal limits as seen on single view AP chest examination . Thus , no evidence of pneumonia .