Kilynn Johnson got very sick one night and was rushed to hospital almost five years ago. Surgery to remove a tumor from her gallbladder revealed cancer that had spread from her gallbladder to some lymph nodes and to her liver. She needed six weeks of both radiation and chemotherapy. Gallbladder cancer is diagnosed in only about 3,700 Americans every year, and it mostly strikes people in their '70s and older. Johnson was only 46.