Talk radio king Rush Limbaugh stunned his 20-million member audience Monday with the announcement he's been diagnosed with "advanced lung cancer." The 69-year-old conservative talk pioneer closed his broadcast with the grim news, saying he will be leaving his golden EIB microphone for treatment, but hopes to return soon.

“This day has been one of the most difficult days in recent memory, for me, because I’ve known this moment was coming,” Limbaugh said. “I’m sure that you all know by now that I really don’t like talking about myself and I don’t like making things about me… one thing that I know, that has happened over the 31-plus years of this program is that there has been an incredible bond that had developed between all of you and me.”

The conservative radio icon then told his audience that his job has provided him with the “greatness satisfaction and happiness” of his life.

“So, I have to tell you something today that I wish I didn’t have to tell you. It’s a struggle for me because I had to inform my staff earlier today,” he said. “I can’t help but feel that I’m letting everybody down. The upshot is that I have been diagnosed with advanced lung cancer.”

Limbaugh told listeners that the disease will keep him off the air on certain days when he receives treatment. He said the diagnosis has been confirmed by two medical institutions since he first realized something was wrong on January 12 when he experienced shortness of breath.

“I thought about not telling anybody,” he said. “It is what it is. You know me, I’m the mayor of Realville. This has happened and my intention is to come here every day I can, and do this program as normally and competently and expertly as I do each and every day because that is the source of my greatest satisfaction professionally, personally.”

“I told the staff today that I have a deeply personal relationship with God that I do not proselytize about, but I do, and I have been working that relationship tremendously,” he said. "I am, at the moment, experiencing zero symptoms."

Limbaugh said he will undergo further testing and plans to “push ahead and keep everything as normal” as he can.

“I felt that I had to tell you because that’s the kind of relationship that I feel like I have with those of you in this audience,” he said. “Over the years, a lot of people have been very nice, telling me how much this program has meant to them but, whatever that is, it pales in comparison to what you all have meant to me.”

The radio veteran -- widely considered one of the most powerful voices in conservative media -- said he “can’t describe” the feeling but he’s aware his audience understands him.

“The rest of the world may not,” Limbaugh said. “But I know that you do.”

Limbaugh called his listeners one of “the greatest sources of confidence” that he’s ever had in his life.

“I hope I will be talking about this as little as necessary in the coming days, but we’ve got a great bunch of doctors, a great team assembled, we’re at full speed ahead on this,” Limbaugh said. “It’s just now a matter of implementing what we are going to be told later this week.”

“If not, it’ll be as soon as I can,” Limbaugh said. “Every day I’m not here, I’ll be thinking of you and missing you.”

Limbaugh’s name began trending on social media within minutes of shocking announcement as countless users offered thoughts and prayers.

Limbaugh began the “The Rush Limbaugh Show” in 1988 and has since earned a variety of awards and honors. He is a five-time winner of the National Association of Broadcasters Marconi Award for “Excellence in Syndicated and Network Broadcasting,” a No. 1 New York Times bestselling author, a member of the Radio Hall of Face, National Association of Broadcasters Hall of Fame, was named one of Barbara Walters’ 10 Most Fascinating People in 2008, and one of TIME’s 100 Most Influential People in the World in 2009.

Limbaugh has been named to Forbes Magazine’s 50 Most Powerful Celebrities in the United States list, received the William F. Buckley, Jr. Award for media excellence, was named CPAC’s “Defender of the Constitution Award” in 2009 and was invited to stay in the Lincoln Bedroom in the White House by President George H. W. Bush.

He was also an honorary member of the House of Representatives Republican freshman class of 1995.

Story provided by Fox News.

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