Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding chest examination of ___ . The heart size is unchanged and remains within normal limits . No configurational abnormality is identified . Unremarkable appearance of thoracic aorta . The pulmonary vasculature is not congested . No signs of acute parenchymal infiltrates are present . Similar as observed on the preceding examination , the diaphragms are in relatively low position and appear flattened , a finding suggestive of COPD . Again , acute or new infiltrates can not be identified . The lateral view discloses again moderate degree of degenerative changes in the thoracic spine , mostly in the lower half , but there is no evidence of any vertebral body compression fracture .
    OUTPUT:
    
Stable chest findings , no acute pulmonary infiltrates , no suspicious mass lesions . General findings suggestive of COPD .