Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . The heart size is normal . No configurational abnormality is identified . Unremarkable presentation of thoracic aortic contours . 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 . Skeletal structures of the thorax grossly unremarkable . Next preceding chest examination is dated ___ . The patient was examined on a trauma board at that time with grossly normal chest findings .
    OUTPUT:
    
Stable , normal chest findings . No evidence of active or latent specific infection . No acute pneumonia , pleural effusions .