 Kansas City Star | Family: Missing cyclist may have brain cancer PORTLAND, Ore -- Nearly two weeks after Mark Bosworth vanished during a seven-day bicycle tour along scenic roads in Oregon, police still have no idea where the 54-year-old cancer survivor went. ... Volunteer on Ore. cycling trip vanishes; family says brain cancer may have him ... Family and friends of missi ng Cycle Oregon volunteer Mark Bosworth plan bike ... Lance Armstrong joins search effort for Oregon man |