Zohn next endured radiation and a stem-cell transplant.
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Zohn is joking, but in a way he's not.
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In August, Zohn found out that cancer has returned,
this time localized around his lungs.
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Zohn wants to show to the world that having cancer
doesn't mean you can't go on living and doing the things you love.
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Zohn is running New York again this Sunday,
with a team that includes two former Survivor contestants and six current cast-members of The Amazing Race.
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Zohn's father, who died of colon cancer when Ethan was 14,
had also run the New York Marathon, so Ethan will almost literally be running in his father's footsteps.