Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size remains mildly enlarged . Aorta is tortuous but unchanged . The mediastinal contours are otherwise stable . There is mild interstitial pulmonary edema . No pleural effusion or focal consolidation is seen . There is no pneumothorax . Lucency with attenuation of the pulmonary vascular markings towards the apices is compatible with mild emphysema . No acute osseous abnormalities visualized . Mild degenerative changes are present within the thoracic spine .
    OUTPUT:
    
Mild interstitial pulmonary edema . Emphysema .