Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal lung volumes without focal consolidation , pleural effusion or pneumothorax . Left lung base atelectasis is noted . Hilar and mediastinal silhouettes are unchanged . Aortic arch calcifications are again noted . The descending aorta appears tortuous . The heart size is top normal .
    OUTPUT:
    
No acute cardiopulmonary process .