Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are hyperinflated consistent with chronic obstructive pulmonary disease . There is increase in interstitial markings bilaterally , maybe due to chronic lung disease . Opacity at the right lung base may represent slight eventration of the right hemidiaphragm , but underlying lesion is not entirely excluded , although felt unlikely . The cardiac silhouette remains top normal to mildly enlarged . The aorta is calcified . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
1 . COPD . 2 . Diffuse increase in interstitial markings may relate to chronic lung disease , although there may be a component of mild superimposed edema . 3 . Somewhat rounded opacity at the right hemidiaphragm may in part relate to eventration of the right hemidiaphragm , but an underlying lesion is not excluded . Recommend shallow oblique radiographs for further evaluation and if finding persists and remains unexplained , followup chest CT .