Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Comparison is made with the next preceding single chest view of ___ . Presently , the heart size is normal . No configurational abnormality is present . Thoracic aorta unremarkable . No mediastinal abnormalities are seen . The pulmonary vasculature is normal . No signs of acute or chronic parenchymal infiltrates are present and the lateral and posterior pleural sinuses are free . No evidence of pneumomediastinum or pneumothorax . The , on previous examination identified , mediastinal air collections and tissue emphysema in the right lower neck area have normalized .
    OUTPUT:
    
Normalization of chest findings . No persistent pneumothorax , mediastinal or chest wall emphysema .