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 identified . Unremarkable appearance of thoracic aorta and mediastinal structures . 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 grossly unremarkable . Observed similar as on the preceding examinations , there are multiple small surgical clips overlying mediastinal and cardiac shadows on the frontal view and identified to be in the chest wall area when comparing it with the lateral view . Most of these markers existed already on the preceding examination , however , there are new additional two markers at the lower neck area bilaterally . Reason and cause of these is unknown .
    OUTPUT:
    
No cardiac enlargement , pulmonary congestion , or acute pulmonary vascular abnormalities on this PA and lateral chest examination .