Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right internal jugular central venous catheter tip terminates in the proximal right atrium . No pneumothorax is present . Heart size is mildly enlarged . The mediastinal and hilar contours are unremarkable . Mild pulmonary vascular congestion is present , unchanged . There is no frank pulmonary edema , pleural effusion or pneumothorax . Minimal atelectasis is noted in the lung bases .
    OUTPUT:
    
1 . Right internal jugular central venous catheter in the proximal right atrium . No pneumothorax . 2 . Mild pulmonary vascular congestion without frank pulmonary edema .