"The Evil Dead" star Bruce Campbell announced he's been diagnosed with cancer and will be canceling upcoming appearances.On Monday night, Campbell took to X to share that he has a "treatable" but not "curable" type of cancer. "I apologize if that was a shock — it was for me too," he wrote."I’m posting this, because professionally, a few things will have to change — appearances and cons and work in general need to take [a] back seat to treatment," Campbell continued.'EVIL DEAD' STAR BRUCE CAMPBELL BOOTS HECKLER FROM FILM PREMIERE: GET THE F--- OUTTA HERE!'The horror star said he hopes to be well by the summer so he can tour with his comedy movie, "Ernie & Emma," this fall."There are several cons this year summer that I have to cancel," he continued. "Big regrets on my part. Treatment needs and professional obligations don't always go hand-in-hand."Campbell kept the rest of his message short and sweet, explaining that he's "not trying to enlist sympathy — or advice.""I just want to get ahead of this information in case false information gets out (which it will). Fear not, I am a tough old son-of-a-b---- and I have great support, so I expect to be around a while. As always, you’re the greatest fans in the world and I hope to see you soon!" Campbell concluded.LIKE WHAT YOU’RE READING? CLICK HERE FOR MORE ENTERTAINMENT NEWSThe star is best known for his role as Ash Williams in the 1981 classic "The Evil Dead." Beyond horror, Campbell has appeared in a number of TV shows, including "Burn Notice," "Hercules: The Legendary Journeys" and "Xena: Warrior Princess."CLICK HERE TO SIGN UP FOR THE ENTERTAINMENT NEWSLETTERHe is also known for frequent collaborations and cameo appearances in Sam Raimi projects, including the "Spider-Man" films.