Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The aorta is tortuous and diffusely calcified . Mediastinal and hilar contours are otherwise unchanged . Lungs are hyperinflated . Aside from minimal atelectasis in the lung bases , there is no focal consolidation , pleural effusion or pneumothorax . No pulmonary vascular engorgement is present . Linear densities within the right upper quadrant of the abdomen are compatible with a fractured old inferior vena cava filter , as demonstrated on the prior CT .
    OUTPUT:
    
Mild bibasilar atelectasis . No evidence of pulmonary edema .