Barrie's op went as well as expected given the advanced surgical techniques used these days. I am currently spending the weekend with him in between his "official" carers (ex wife and daughter), and he's active, looks as fit as ever and fully ambulatory. Some pain around the surgical site (not entirely unexpected !) and a couple of decent war story scars.
He is waiting for the biopsy results from the tissue around the kidney, but based upon my own experience if there was something bad they would have contacted him immediately, i.e. no news is good news.
I've told him that everyone who knows him (and many who don't) are rooting for him.
NEO