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 detected . Lung volumes are low . Cardiac , mediastinal and hilar contours are unchanged with the heart size appearing mildly enlarged . Pulmonary vasculature is not engorged . Streaky opacities in the lung bases likely reflect areas of atelectasis . No focal consolidation or pleural effusion is demonstrated . No acute osseous abnormality is detected .
    OUTPUT:
    
Right internal jugular central venous catheter in the proximal right atrium . No pneumothorax .