Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided central venous catheter terminates in the region of the right atrium . Bibasilar opacities likely reflect atelectasis . No pneumothorax is identified . There is no vascular congestion or pleural effusions . Mediastinal and hilar contours are within normal limits . Hyperdense nodules within the mediastinum likely reflect prior granulomatous disease . The cardiac silhouette is mildly enlarged . The lateral view is difficult to evaluate given the arm - down positioning .
    OUTPUT:
    
1 . Right - sided central venous catheter terminating in the region of the right atrium 2 . Bibasilar atelectasis 3 . Mild cardiomegaly