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 appearance of the thoracic aorta and no abnormal mediastinal structures are seen . The pulmonary vasculature is not congested . There exists , however , a rather uneven peripheral vascular distribution in the pulmonary circulation with some increased linear densities on the bases and hyper - translucent appearance . This coincides with rather low positioned and somewhat flattened diaphragmatic contours . No evidence of any acute parenchymal infiltrates , and the pleural sinuses are free laterally and posteriorly . Skeletal structures of the thorax are grossly within normal limits . There exists no prior chest examination in our records available for comparison .
    OUTPUT:
    
General findings compatible with rather advanced COPD , but no evidence of acute pulmonary infiltrates can be identified . No pneumothorax in the apical area .