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 abnormality is seen . Thoracic aorta and mediastinal structures are unremarkable . 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 apical area . Skeletal structures demonstrate mild - to - moderate degenerative changes mostly in the mid portion of the thoracic spine , but no evidence of intervertebral body compression is seen . There exists no prior chest examination or records available for comparison .
    OUTPUT:
    
Chest findings within normal limits .