Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left PICC tip is in the right atrium and is 6 cm above the level of the carina . The lungs are clear and pleural surfaces are normal . No pneumothorax . Heart size , mediastinal and hilar contours are normal .
    OUTPUT:
    
Left PICC tip is in the right atrium . If withdrawn by 1 .5 cm will place tip in the low SVC . Results were conveyed via telephone by Dr .___ to Dr . ___on ___ at 12 :00 PM within 15 minutes of observation of findings .