Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small heterogeneous right lung base opacities , concerning for developing pneumonia . Stable biapical scarring . No substantial pleural effusion or pneumothorax . Lung hyperinflation with flattening of the diaphragms and saber sheath trachea is similar to prior and consistent with COPD . Mild cardiomegaly and cardiomediastinal contours are stable .
    OUTPUT:
    
1 . Subtle heterogeneous right lung base opacities , concerning for developing pneumonia . Followup chest radiograph in ___ weeks after treatment is recommended to assess for resolution . 2 . COPD .