Kensington Palace said in a statement on Monday that Catherine, 42, was “making good progress.” They previously said that her procedure was “planned” and the issue was “noncancerous.”

The future queen is expected to need a significant period of time to recover. She isn’t scheduled to return to her official duties until after Easter.

Palace officials are normally tight-lipped about the health of members of the royal family and even though few details were revealed, it still came as something of a surprise when, earlier this month, the palace issued back-to-back health announcements. Charles, 75, is said to have gone public with his issues as a way to encourage other men experiencing symptoms to get their prostates checked.

It has been an eventful period for royal health news. Last week, Sarah Ferguson, the ex-wife of Prince Andrew, said that she had been diagnosed with malignant melanoma, a form of skin cancer.