Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right internal jugular central venous catheter tip terminates at the junction of the SVC and right atrium . Heart size remains mildly enlarged . Aortic knob is calcified . Mediastinal and hilar contours are similar . Pulmonary vasculature is normal . There is no pneumothorax or pleural effusion . There is improved aeration of the lung bases with minimal atelectasis noted in the left lung base . No acute osseous abnormalities present .
    OUTPUT:
    
1 . Right internal jugular central venous catheter tip terminates at the SVC / right atrial junction . No pneumothorax . 2 . Improved aeration of lung bases with minimal residual left basilar atelectasis .