Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a tortuous ascending and descending aorta with atherosclerotic calcifications evident within the arch . Otherwise , cardiomediastinal and hilar contours are unremarkable . Linear densities projecting over the left lung base correspond with areas of atelectasis , present on the ___ CT abdomen . No pleural effusions or pneumothorax identified .
    OUTPUT:
    
No acute cardiopulmonary process .