Anthony Quinn hardly remembers his osteosarcoma treatment, but he sees a reminder of his journey each day. At just 4 years old, Anthony lost his leg shortly after his osteosarcoma diagnosis. But Anthony has never let that hold him back. Today, the 27-year-old is training with big dreams: to one day make it to the Paralympics.

"I've always been competitive and loved sports," Anthony says. "I've always felt that...

After running the Boston Marathon 27 times, you'd think Bob Lehew would have experienced every trial a runner could face. But this year, he experienced a new challenge. Bob ran the race halfway into his six weeks of radiation treatment for squamous cell carcinoma, a type of skin cancer.

"I was happy to see the finish line," he says, shrugging off the accomplishment modestly.

At age 71, Bob has run more than 220...