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iconic role as the dude in the cult classic "the big lebowski." >> careful man, there's a beverage here! >> reporter: the 70-year-old channeling that character when he announced his lymphoma diagnosis. we'll paraphrase for the sake of the expletive. he tweeted, "as the dude would say, new information has come to light." lymphoma is a form of cancer that affects the tissues and organs that store and carry white blood cells. the infection fighters in our bodies. the two main types are hodgkin, which spreads in an orderly manner, and non-hodgkin, which spreads more randomly. >> hodgkin lymphoma, which is one of the more common types, tends to affect men more than women, tends to affect white men in particular. >> reporter: in all, more than 900,000 americans are living with both types. if caught early enough, doctors say it's highly treatable with chemotherapy and radiation treatment. david, bridges says his prognosis is good and he has a great team of doctors providing him treatment. nice to hear the dude's optimistic. david? >> yes, we are all pulling for him tonight. adrienne, thank you. and when we come back on the broadcast tonight, news of a deadly police shooting, a