i've talked to folks over there, i think one of the things that we heard back was it may be shorter than this. i think they wanted to err on the side of it being a longer stay. but we just don't know. the other thing that we don't know and that was really important to me is, this is described as a benign kidney condition. benign obviously is good. we don't want it to be anything other than benign. but what exactly is it that was treated here? some is of the benign things that happen to a kidney are things like sifts. but those are not treated using embolization. so was it some sort of mass? was it something else? this statement in part gives us some information, but there's a lot it doesn't give as well. >> and kate, you've been working, reporting this all day. the president visiting 34melani early this evening. she went through the procedure without him. what are you learning? >> well, i think it's not unusual that the president wasn't there. most of these issues involving first ladies are private.