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Lance Armstrong Tweeted about the loss of the famed musician Adam Yauch.
'Crushed to hear the news of Adam Yauch's passing. #RIPMCA,' he Tweeted.
Yauch died after years of battling cancer. Armstrong also battled the disease, having brain surgery, testicular surgery and extensive chemotherapy, and has been in remission since 1997.
(Pictured: Tour de France champion Lance Armstrong appears in this undated photo.)
(Photo courtesy of lancearmstrong.com)