Reuters —

Norway’s Crown Princess Mette-Marit has undergone a successful lung transplant and is recovering from the procedure, the royal household said in a statement on Wednesday.

The 52-year-old wife of Crown Prince Haakon, the heir to ‌the Norwegian throne, was diagnosed with pulmonary fibrosis in 2018, a chronic disease that causes scarring in the lungs and leads to a reduced oxygen uptake.

“Like all newly transplanted patients, the crown princess will remain at the hospital for several weeks to come,” Oslo University Hospital Professor Are Holm said in a statement provided by the palace.

The surgery comes at a strained time for the royal family: Earlier ⁠this week, Mette-Marit’s 29-year-old son from a previous relationship, Marius Borg Hoiby, was convicted of rape and domestic violence and sentenced to four years in prison.