Dr. Marc Siegel: A brave little girl and medical research combine to fight cancer, but more action is needed
July 21, 2018 at 14:00 PM EDT
Addie DePersiis turns 2 in the week ahead and her birthday party is Sunday. The fact that she has lived this long is something of a miracle, because this brave and adorable little girl has been battling brain cancer since she was just 5 months old.