Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine radiograph of the chest demonstrates stable prominent interstitial markings bilaterally without any focal consolidation or superimposed edema . The cardiomediastinal and hilar contours are unchanged . The left - sided PICC line ends at the approximate level of the cavoatrial junction . The temporary pacing wire projects over the right atrium , headed towards the right ventricle . No pneumothorax . Opacity projecting over the expected location of the right renal shadow likely represents contrast in the right renal collecting system .
    OUTPUT:
    
Temporary pacing wire projects over the right atrium , headed towards the right ventricle . If exact location is needed , a lateral view would be helpful if patient is able .