Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are obtained . The lungs are hyperinflated , consistent with chronic obstructive pulmonary disease / emphysema . There is mild left base atelectasis . No definite focal consolidation is seen . There is a subtle opacity projecting over the lateral right upper lobe between the posterolateral right fifth and sixth ribs . While this could be artifactual , underlying pulmonary nodule can not be excluded and given history of emphysema , nonurgent chest CT is recommended . The cardiac silhouette is top normal to mildly enlarged . The aorta is calcified and tortuous . There is diffuse osteopenia .
    OUTPUT:
    
1 . COPD / pulmonary emphysema . Subtle increased opacity in the lateral right upper hemithorax , while may be artifactual , underlying pulmonary nodule can not be excluded . Given history of emphysema , nonurgent chest CT is recommended . 2 . Mild left base atelectasis .