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 within normal limits . No typical configurational abnormality is seen . Thoracic aorta unremarkable . Mediastinal abnormalities are present . The pulmonary vasculature is not congested . No signs of acute or chronic parenchymal infiltrates are noted and the lateral and posterior pleural sinuses are free . Skeletal structures of the thorax demonstrate moderate degree of degenerative changes mostly in the mid portion of the thoracic spine , but no other significant skeletal abnormalities are noted . There exists no prior chest examination in our records available for comparison .
    OUTPUT:
    
No significant cardiac enlargement or configurational abnormality and no evidence of CHF in this ___-year - old female patient to undergo pacemaker placement .