Actor Dave Coulier has been diagnosed with cancer, again.

The "Full House" star, 66, tells USA TODAY that in his first routine checkup after beating non-Hodgkin lymphoma, doctors found tongue cancer in his mouth.

"This is a little bit of a different animal," Coulier says. "It was a big shocker."

Coulier is currently undergoing radiation treatments for the disease, which will continue until Dec. 31.

"I am going to enjoy the new year after that final treatment, because I get to wake up on the 1st of January of 2026 and not have to go downtown with my wife and lay on table and get a radiation treatment," the actor says in an interview Tuesday, Dec. 2. "So it's going to be a very freeing experience to start the new year for sure."