Dallas star Larry Hagman is battling cancer, but will still take part in TNT's reboot of the series, he announced Friday.

TV Guide first reported the 80 year-old actor's diagnosis. He said he will still play J.R. Ewing in the upcoming series while receiving treatment.

As J.R. I could get away with anything -- bribery, blackmail and adultery, Hagman said in a statement. But I got caught by cancer. I do want everyone to know that it is a very common and treatable form of cancer. I will be receiving treatment while working on the new Dallas series. I could not think of a better place to be than working on a show I love, with people I love. Besides, as we all know, you can't keep J.R. down!

The series will also feature fellow Dallas veterans Patrick Duffy, who plays Bobby Ewing and Linda Gray's Sue Ellen Ewing.