Urgh, these threads are so ghoulish and open to so much nonsense, case in point the poster who thinks KC has pancreatic cancer. Pancreatic cancer consumes the person from the inside out to the point they are positively skeletal. I sincerely doubt it's that at all.
If KC wanted us to know, they'd tell us. Speculating really isn't helping anyone, more so as cancer is so personalised anyway, so even if we knew for certain his kind of cancer, it's stage, grade etc, that still wouldn't give us the whole picture.
Case in point I have cancer, as does a friend I made during/on the chemo ward. On paper we both have the same type and grade of cancer, we're both being treated at the same hospital and have some of the same treatments but different drugs, different cycles and durations. I'm still having ongoing treatment and close management, she's not. And I am certain this is the reason why he's not being transparent about his cancer, treatment or prognosis, because it's about him not anyone else's cancer. Quite simply it's his cancer, his treatment, and his life. If he wanted us to know, there would have been a press release. Let the man have at least a modicum of privacy. (And I can quite understand why ER did not allow the press to report she was ill in the first instance).