Trump says he had a ‘perfect’ MRI at Walter Reed Hospital.

President Donald Trump said he underwent an MRI scan during a recent visit to Walter Reed National Military Medical Center.

“I did it. They did an MRI. It was perfect,” the president told reporters aboard Air Force One on Monday en route to a weeklong trip to Asia.

Trump, who at 79 is one of the oldest presidents in US history, did not say why he received the scan, which can be used to check for a wide range of problems.

The scan was performed during Trump’s visit to Walter Reed earlier this month, when his doctor said he was in “extreme health.”

“The doctor said (it) was some of the best reporting on the era that they’ve ever seen,” Trump said Monday.

Asked why he got an MRI, meaning an MRI, Trump told reporters to “ask the doctors.”

Presidential physician Dr. Sean Barbabella said in a statement at the time that Trump’s appointment was a “planned follow-up evaluation” “as part of his ongoing health maintenance plan and includes advanced imaging, laboratory testing and preventive health assessments.”

The president “continues to demonstrate excellent overall health,” Dr. Barbabella said.

MRI scans use strong magnetic fields to create an image of the inside of a patient’s body and are especially useful for looking at soft tissues, according to the US National Institutes of Health (NIH).

Earlier this year, the White House announced that Trump had been diagnosed with a vein disease called chronic venous insufficiency.

Press secretary Caroline Leavitt said Trump noticed swelling in his legs, prompting him to see his doctor, who diagnosed him with the condition.

Chronic venous insufficiency occurs when the veins in the legs do not allow blood to flow back to the heart, causing it to pool in the lower extremities. It is “benign and common” in older individuals, according to a note from Barbabella.

Trump was also recently photographed with a smear of makeup on the back of his hand. The White House said it was not related to a vein condition, but instead a bruise from frequent handshakes.