Source: AP

Dennis Hopper has been diagnosed with prostate cancer. The 73-year-old actor is canceling all upcoming travel plans in order to focus on treatment, which he is undergoing through a "special program" at the University of Southern California.

Earlier this month, prior to the diagnosis announcement, Hopper was taken to a New York area hospital and treated for dehydration.

He recently finished filming the second season of Crash, a Starz network television version of the Oscar-winning movie. Hopper, a Kansas-born actor, was nominated for an Academy Award in 1987 and 1970, and is known for his work in movies such as Speed , Apocalypse Now and Easy Rider