The End for Brock Lesnar?

Bloodyelbow brings us some ominous quotes from TMZ regarding the health status of Brock Lesnar,

White tells us Lesnar -- the UFC heavyweight champ -- is "very, very sick" with some sort of intestinal disorder, although listening to White, it sounds a lot more serious than that. White says the condition will require "major surgery."

White is going to visit Lesnar in the hospital and is trying to get him transferred to the Mayo Clinic, one of the most renowned medical facilities in the world.

...

White acknowledges the current condition is not mono but he will not be specific. White says the condition is not HIV or cancer.

And, White tells TMZ, "There's a possibility Lesnar will never fight again."

It should be noted that Lesnar's camp is saying that things are not so serious.

As someone who has had mono --it took me two hours to build up the energy to eat a piece of toast and then I was done for the day-- it is a long road to recovery and WKR wishes Lesnar the best. But then again TMZ says it is not mono. So what is medically wrong with Brock?

Seriously, does anyone have any ideas?