First lady Melania Trump underwent a "successful" procedure Monday to treat a benign kidney condition and was expected to remain hospitalized for the rest of the week, her staff said. President Donald Trump took a helicopter to Walter Reed National Military Medical Center to visit her and tweeted that his wife was in "good spirits."Mrs. Trump, 48, had the embolization procedure Monday morning. The president spoke with Mrs. Trump before the procedure and with her doctor afterward, the first lady's office said.The president tweeted shortly before arriving at Walter Reed outside Washington, saying it was a "successful procedure," describing his wife as being "in good spirits" and offering his thanks "to all of the well-wishers!" He spent over an hour at the hospital before departing, without addressing waiting reporters, via motorcade under stormy skies.The White House did not offer any additional details on Mrs. Trump's condition, though Vice President Mike Pence described the procedure as "long planned" as he opened a speech at an evening event celebrating Israel's independence. "Melania is already on the mend," Pence said.In the Senate, Minority Leader Chuck Schumer, D-N.Y., sent well wishes for "a speedy recovery to the first lady."She was last seen in public on Wednesday at a White House event where she and the president honored military mothers and spouses for Mother's Day.Two urologists who have no personal knowledge of Mrs. Trump's condition said the most likely explanation for the procedure is a kind of noncancerous kidney tumor called an angiomyolipoma.They're not common but tend to occur in middle-aged women and can cause problematic bleeding if they become large enough, said Dr. Keith Kowalczyk of MedStar Georgetown University Hospital."The treatment of choice" is to cut off the blood supply so the growth shrinks, added Dr. Lambros Stamatakis of MedStar Washington Hospital Center. Doctors do that with an embolization, meaning a catheter is snaked into the blood vessels of the kidney to find the right one and block it.
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