Trump, who turned 48 last month, had been experiencing a recurring issue with her kidney that her office describes as benign.
The White House declared the procedure "successful" but has withheld additional information about her condition, citing the first lady's right to privacy. Her spokeswoman had said in a statement Monday announcing the "embolization" procedure that the first lady was likely to remain hospitalized for "the duration of the week". "We pray for her speedy and full recovery, and he look forward to her returning to her work making a difference in the lives of our nation's children".
USA first lady Melania Trump arrives in the Rose Garden to speak at the White House May 7, 2018 in Washington, DC. "Thank you for so much love and support!" the president said in a Twitter posting on Tuesday.
She's expected to remain under hospital supervision for the rest of the week following the procedure.
Vice President Pence said Monday night that the first lady's procedure was "long-planned", and that it was a "success and Melania is already on the mend".
Plane makes emergency landing after cockpit windshield gets ripped away
Along with the pilot, a cabin crew member of the airline also suffered injuries though the injuries are of minor nature. A cabin attendant was slightly hurt during the descent, according to the Civil Aviation Administration of China (CAAC).
However, most often Schrader sees patients who need embolizations due to bleeding in their kidneys.
On Monday evening, the president made an unannounced visit to the Bethesda, Md. hospital, where he stayed for over an hour.
The Slovenia-born former model married Trump in 2005.
"Our great first lady is doing really well", he wrote. They have a 12-year-old son named Barron.
With the president watching, Mrs. Trump last week unveiled the "Be Best" campaign, which she said will focus on childhood well-being, social media use and opioid abuse.