procedure to treat a kidney condition. president trump addressing how she's doing today. >> i want to start by say iing that melania is in the hospital doing really well. she's watching us right now u. and i want to thank the incredible doctors, walter reed medical center, they did a fantastic job. she sends her love. >> "outfront" now, the director of the comprehensive kidney cancer program at the mt. sinai health system. i appreciate your time. you know a lot about this, so when we hear these words, benign, you can sort of read between the lines in a way no one else can. we have heard the procedure usually is noninvasive, that row don't need to be in for long. maybe in and out quickly. the president said she will be b leaving the hospital if two or three days. so she's going to be in there for quite a while by the standard of saying in the hospital in america. why might she need such an