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 with flattening of the diaphragms , consistent with COPD . Bullous changes are seen at the lung apices bilaterally . Opacity at the right suprahilar region , most likely correlates with known lung mass . No pleural effusion or pneumothorax is seen . The aorta is somewhat tortuous . The cardiac silhouette is top normal .
    OUTPUT:
    
1 . COPD , pulmonary emphysema . 2 . Right suprahilar opacity most likely correlates with lung mass seen on prior CT , better evaluated on CT . 3 . Please also note that patient had a sacral mass biopsy done on ___ , which may be causing patient 's lower back pain .