Kate Middleton has been diagnosed with cancer.

The Princess of Wales revealed the somber news via a video message Friday.

Middleton explained that at the time of her abdominal surgery, it was believed her condition was non-cancerous, however post-operative tests revealed cancer.

“This of course came as a huge shock, and William and I have been doing everything we can to process and manage this privately for the sake of our young family,” Kate, 42, said in the video. “As you can imagine, this has taken time. It has taken me time to recover from major surgery in order to start my treatment.”

While Middleton did not disclose the type of cancer, she did share she started “preventative chemotherapy” in February.

This story is developing and will be updated when more information is available.

Our prayers are with Kate and her family as they manage this difficult diagnosis.