Zac Efron, the High School Musical heartthrob underwent emergency surgery Tuesday to remove his appendix.The 20-year-old actor had the operation at Cedars-Sinai Medical Center in Los Angeles, his publicist Gina Hoffman said.

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Efron became a teen heartthrob with his starring role as Troy Bolton in the hit Disney Channel TV movie “High School Musical” and its sequel. He also starred in the film “Hairspray.”