A sister and brother are thick as thieves, but their worlds came crashing down when they were diagnosed with the same rare form of brain cancer. It started when 6-year-old Kalea Avery was vomiting and complaining of headaches in May. An MRI revealed she had medulloblastoma, a mass at the stem of her brain. Two weeks after her surgery to remove it, her 4-year-old brother, Noah began having the same symptoms. InsideEdition.com's Mara Montalbano (https://twitter.com/MaraMontalbano) has more.