Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided Port - A - Cath tip terminates at the SVC / right atrial junction . Heart size is normal . Atherosclerotic calcifications are noted at the aortic knob . The mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Minimal patchy atelectasis seen in the lung bases . Innumerable pulmonary metastases are re- demonstrated . There is no pneumothorax or pleural effusion . No acute osseous abnormality is present .
    OUTPUT:
    
Mild bibasilar atelectasis . Innumerable pulmonary metastases , as seen previously .