Lance Armstrong: Help find missing Cycle Oregon volunteer

Lance Armstrong: Help find missing Cycle Oregon volunteer

EUGENE, Ore. - Cancer survivor and 7-time Tour de France winner Lance Armstrong has asked his over 3 million followers on Twitter and 2 million fans on Facebook to join the search for Mark Bosworth, a Cycle Oregon volunteer from Portland who vanished Sept. 16.

Like Armstrong, Bosworth is a cancer survivor. His family and doctors suspect his disappearance, preceded by bouts of confusion, could indicate the cancer has returned or that he is suffering from an infection. His family said Bosworth may not know what year it is right now and might believe it is 2001 or earlier.

Bosworth has overcome cancer twice. In the summer of 2007, he noticed a lump under his chin that wasnt going away. He was diagnosed with non-hodgkins lymphoma. He underwent a comprehensive chemotherapy regiment. In the summer of 2009, the same cancer returned - this time in his eye. He underwent eight months of treatment, including injections of chemo in his eyes and radiation therapy. Because the cancer had passed what medical experts call the blood-brain barrier, Mark had a bone marrow transplant in April 2010.

His wife, Julie, wore a gold bracelet throughout her husbands second battle with cancer. She took it off when he was declared cancer-free.

On Sunday, she put it back on "I'm keeping it on until he has his arms around me again," she said.

Armstrong was the second American to win the Tour. Three-time winner Greg LeMond has also lent his celebrity to the effort, posing for a photograph last weekend with a copy of the missing person poster for Bosworth. LeMond also shared information on his Twitter and Facebook pages.

LeMond and Armstrong's shared support for the search for the missing cyclist from Oregon is a rare show of unity from the two American cyclists, who have clashed in the past over accusations of doping by Americans in the European peloton.