Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views have been obtained with patient in upright position . Comparison is made with the next preceding similar study of ___ . Mild - to - moderate cardiac enlargement as before , no change in configuration . The thoracic aorta is stable . No new mediastinal abnormalities . The pulmonary vasculature is not congested . No signs of acute or chronic parenchymal infiltrates have developed and the lateral and posterior pleural sinuses remain free . No pneumothorax in the apical area .
    OUTPUT:
    
Stable chest findings , no evidence of new acute processes .