Credit: Ethan Miller/Getty Images for CineVegas

Actor Dennis Hopper, 73, has prostate cancer, his manager has revealed.

Hopper - who recently wrapped filming on the second season of STARZ's Crash -- is being treated through a "special program" at the University of Southern California and is canceling all travel plans to focus on treatment.

Asked about Hopper's prognosis, his manager tells the Associated Press, "We're hoping for the best."

See today's top celeb news photos

Hopper is best known for directing and starring in the 1969 cult film Easy Rider, for which he was nominated for a Best Original Screenplay Academy Award.