"The procedure was successful and there were no complications", Grisham said.
First lady Melania Trump has undergone an embolization procedure, according to a White House press release. Grisham declined to provide additional information or answer questions about the procedure, saying that the first lady is entitled to privacy. It can also be used to block an embolism or an abnormal cluster of blood vessels. They send a tube through the labyrinthine vessels, then another tube through that one to reach the smaller blood vessels.
One example of a benign growth on the kidneys that may be treated with an embolization procedure is an angiomyolipoma, or a benign collection of fat and muscle. The statement only specifies that Mrs. Trump had a benign kidney condition.
Typically, doctors will merely take periodic images of a tumor smaller than four centimeters.
"When I think of anyone - especially a female - in their 40s or 50s having an embolization, that's the first thing that comes to mind", says Dr. Keith Kowalczyk, a urologist at MedStar Georgetown University Hospital.
That could mean that doctors are checking for a lung disease associated with angiomyolipomas, he said. Specialists said it could be that doctors had been monitoring a mass for a while and chose to act on it now because it had grown.
The official says the visit to Walter Reed Medical Center is expected later Monday.
Melania Trump is the first to go through such a serious medical procedure since Nancy Regan who underwent a mastectomy.
Thankfully, Melania's procedure was completed successfully without complications, and many are wishing her a speedy recovery. "Thank you to all of the well-wishers!" he wrote in a tweet.
U.S. media reported that her husband, Donald Trump, is due to visit her in hospital later in the day.
She was last seen in public on Wednesday at a White House event to honour military mothers and spouses for Mother's Day.
Melania Trump, who has been gradually raising her profile as first lady, recently hosted her first state dinner and launched a public awareness campaign to help children.