Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Subpleural opacity in the right upper anterior lung appreciated on limited upper CT sections is beyond the resolution of the chest radiograph and not visualized . Previously increased lucency in the right upper lung and parenchymal heterogeneity is because of pulmonary emphysema better appreciated on prior CT . There are no discrete opacities concerning for infection or pulmonary edema or aspiration . Heart size is top normal . Atherosclerotic calcification in the aortic arch is mild to moderately severe . Mediastinal and hilar contours are normal . No pleural abnormality .
    OUTPUT:
    
No evidence of infection or pulmonary edema . A subpleural irregular opacity appreciated on recent CT dated ___ is beyond the resolution of chest radiograph .