Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild bibasilar atelectatic changes are again noted but overall aeration appears inimally improve in comparison to prior study from ___ . Cardiomediastinal silhouette remains moderately enlarged but stable . Atherosclerotic calcifications are noted throughout the aortic arch and the aorta appears tortuous but stable . Otherwise , the lungs are without focal consolidation or pneumothorax . No acute fractures are identified .
    OUTPUT:
    
1 . Mild bibasilar atelectasis with no acute cardiopulmonary process identified . 2 . Enlarged cardiac silhouette appears stable . A pericardial effusion must be clinically excluded .