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ET confirms that Patrick Swayze celebrated his 56th birthday - happy and healthy - on the set of his A&E series "The Beast."

Swayze, who announced last March that he was battling pancreatic cancer, filmed scenes Monday in Chicago's Millenium Park, his rep confirms. Some fans even came out to offer their best wishes and support on his special day. 

At lunchtime, Swayze and wife Lisa Niemi enjoyed a birthday lunch in his trailer, while crew members brought decorations and presented him with a birthday cake.