Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right IJ temporary pacer tip in the upper right atrium . Surgical clips in the upper abdomen . Lungs are clear . Borderline pulmonary vascularity . Normal heart size . No effusions . No pneumothorax
    OUTPUT:
    
Percutaneous pacemaker wire tip difficult to see , probably in the right atrium .