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 similar study of ___ . 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 pneumothorax in apical area on frontal view . When comparison is made with the next previous study of ___ , no significant interval change can be identified .
    OUTPUT:
    
Normal chest findings . No evidence of pleural effusions .