Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Lungs are hyperinflated , flattening of the diaphragms , suggesting chronic obstructive pulmonary disease . 7 - mm calcific focus in the left mid chest is stable . Cardiac silhouette top normal to mildly enlarged . The aorta is tortuous . Minimal lingular atelectasis is seen . There is also mild biapical pleural thickening . No focal consolidation is seen . There is no pleural effusion or pneumothorax . The mediastinal contours are stable and do not appear widened . There is diffuse osteopenia .
    OUTPUT:
    
Stable mediastinal contour which is not widened .