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 similar study of ___ . The heart size is unchanged and remains normal . No typical configurational abnormality is present . Thoracic aorta of ordinary dimension but some small calcium deposits are seen in the wall at the level of the 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 . Skeletal structures of the thorax are grossly within normal limits .
    OUTPUT:
    
Persistent normal chest findings in this patient with a history of an acute zoster infection .