Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portal semiupright view of the chest was obtained . Moderate cardiomegaly is again noted . Cardiomediastinal silhouette is virtually unchanged compared to the prior examination , including extensive calcifications in the aortic arch . A prominent calcified left hilar node is also unchanged . The lungs are symmetrically expanded and clear . There is no large effusion and no pneumothorax .
    OUTPUT:
    
Stable appearance of the cardiomediastinal silhouette without evidence of acute intrathoracic abnormality .