Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta demonstrates diffuse atherosclerotic calcifications . Mediastinal and hilar contours are otherwise unremarkable . Lungs are hyperinflated with flattening of the diaphragms and increased retrosternal clear space with attenuation of the pulmonary vascular markings towards the apices compatible with emphysema . Blunting of the costophrenic angles posteriorly could suggest scarring versus trace pleural effusions . Lungs are clear . No focal consolidation or pneumothorax is seen . Pulmonary vasculature is normal . There are no acute osseous abnormalities .
    OUTPUT:
    
Emphysema . Blunting of the costophrenic angles posteriorly could suggest scarring versus small bilateral pleural effusions . No radiographic evidence for pneumonia .