Article continues below advertisementKing Charles shared "good news" about his battle with cancer in a special message broadcasted as part of Channel 4's Stand Up to Cancer campaign."I know from my own experience that a cancer diagnosis can feel overwhelming," the monarch began in his speech that was televised on Friday, December 12. "Yet I also know that early detection is the key that can transform treatment journeys, giving invaluable time to medical teams - and, to their patients, the precious gift of hope.