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 similar study ___ ___ . Similar as to the previous examination , there is evidence of a subclavian approach central venous line terminating in the lower SVC . It most likely represents a Port - A - Cath system . Heart size remains normal and there is no evidence of pulmonary vascular congestion . The thoracic aorta is mildly widened and elongated but does not demonstrate any new local contour abnormalities . The pulmonary vasculature is not congested but somewhat irregular in the periphery , a finding which in conjunction with the low positioned and flattened diaphragm is suggestive of COPD . Acute new infiltrates can not be identified . There is no evidence of pneumothorax in the apical area where there exist bilateral apical local pleural thickening which are smoothly delineated . Skeletal structures of the thorax demonstrate some mild degree of degenerative changes in the thoracic spine as identified on the lateral view , but no evidence of any significant vertebral body compression fracture .
    OUTPUT:
    
Stable chest findings . No evidence of pulmonary congestion or acute infiltrates , but typical signs compatible with COPD .