Watch: Kathy Griffin reveals lung cancer diagnosis
In a post on Twitter, the 60-year-old told fans she is set to undergo surgery to have part of one of her lungs removed.
Griffin, famed for her stand-up comedy and her many acting roles, said she “should be up and running around as usual in a month or less” and will be “just fine”.
She wrote: “I’ve got to tell you guys something. I have cancer. I’m about to go into surgery to have half of my left lung removed.
“Yes, I have lung cancer even though I’ve never smoked!
“The doctors are very optimistic as it is stage one and contained to my left lung.
“Hopefully no chemo or radiation after this and I should have normal function with my breathing.
“I should be up and running around as usual in a month or less.
Watch: Laura Dern on lung cancer awareness
“It’s been a helluva four years, trying to get back to work, making you guys laugh and entertaining you, but I’m gonna be just fine.”
Griffin said she has been fully vaccinated against COVID, adding: “The consequences for being unvaccinated would have been even more serious."
She concluded with a plea to her followers: “Please stay up to date on your medical check-ups. It’ll save your life.”
This article originally appeared on HuffPost UK and has been updated.