Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Allowing for differences in lung volumes , mild interstitial edema is unchanged . Pleural effusions are small , if present at all . The aorta is tortuous and heavily calcified . An enlarged left atrium is noted . If Allowing for differences in technique , mild cardiomegaly is unchanged . There is no focal consolidation or pneumothorax .
    OUTPUT:
    
Unchanged mild interstitial edema and mild cardiomegaly .