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 chest examination of ___ . Mild cardiac enlargement as before with contour prominence of the left ventricle in posterior direction . Thoracic aorta mildly widened and elongated , but without local contour abnormalities . The pulmonary vasculature is not congested . The uneven peripheral vascular distribution , which includes areas of increased translucency are consistent with COPD and appear similar as on the previous examination . There is no evidence of new acute pulmonary parenchymal infiltrates and the lateral and posterior pleural sinuses remain free from any effusion . There is no evidence of pneumothorax in the apical area on the frontal view .
    OUTPUT:
    
Stable chest findings , pulmonary vascular changes , and low positioned diaphragms compatible with COPD . No acute infiltrates presently .