Chris Rude, 680/The Fan’s morning host of the Rude Awakening, is going through chemotherapy and radiation to battle a cancerous tumor behind his throat.

“He’s doing well, the doctors are positive. We have known for awhile,” said Norm Schrutt, his agent. “He’s been going through chemo for six weeks. He’s been working every day.”

Rude, who is actually a pretty private, shy guy off the air, announced it on his show yesterday.

Why did he hold off so long? “He didn’t want a pity party,” Schrutt said.

David Dickey, Rude’s boss at the Fan, said he’s not sure how much time Rude may have to take off down the road when the radiation treatments start.

“Luckily, nothing has spread, thank the Lord,” Dickey said. “They caught it immediately when it popped up. Chris was very diligent getting it checked out.”

Rude has been at the Fan for more than six years after a long run at 96rock. “This is a family run company,” Dickey said. “Like any good family, we’re behind him. We’re hoping for the best.”