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Actor, 73, is canceling all travel plans to focus on treatment

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updated 10:47 p.m. ET Oct. 29, 2009

LOS ANGELES - Dennis Hopper has been diagnosed with prostate cancer and is canceling all travel plans to focus on treatment.

Manager Sam Maydew says the 73-year-old actor and artist is being treated through a "special program" at the University of Southern California.

Asked about Hopper's prognosis, Maydew said, "We're hoping for the best."

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Hopper was forced to cancel his appearance at an exhibition at the Australian Centre for the Moving Image in Melbourne called "Dennis Hopper and the New Hollywood," a collection of artwork and photography by the actor.

Hopper recently finished shooting the second season of TV's "Crash" and has several film projects in the works.