Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph ___ at 05 :45 is submitted .
    OUTPUT:
    
Interval placement of right internal jugular central line which has its tip in the mid to distal SVC . No pneumothorax . Although lung volumes are slightly lower , no focal airspace consolidation is seen to suggest pneumonia . No pleural effusions or pneumothorax . No pulmonary edema . Overall cardiac and mediastinal contours are likely unchanged given differences in technique .