Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Parenchymal abnormality including emphysema with mild interstitial disease appears stable . There is mild pulmonary vascular congestion and interstitial edema . Scarring at the left lung base also unchanged . No pleural effusion or pneumothorax . Mild cardiomegaly is noted . The aortic knob is calcified .
    OUTPUT:
    
Emphysema with mild congestion and edema . Bibasal atelectasis , mild cardiomegaly .