GHS- Thayer Herr, 4, a Langerhans cell histiocytosis patient with his parents, Kara and William and his brother, Shepard join the show

Thayer was diagnosed with a rare form of cancer called Langerhans cell histiocytosis, a cancer of the jaw and ribs. He was diagnosed in May 2019 Thayer had an odd-looking spot in his mouth that Thayer’s dad, a dentist noticed. They had followed it for months. After seeing a pediatric dentist and oral surgeon, Thayer had a mass and a few teeth removed from his lower jaw and they were shocked when the biopsy results came back, revealing it was cancer. The day after receiving his diagnosis the family met with the team at the Jimmy Fund Clinic and after more testing, they discovered the mass on his ribs.From there, his treatment started very quickly and included 21 rounds of chemotherapy and over 350 doses of steroids.  He ended his treatment in May 2020 and his cancer remains inactive.unity for Thayer to grow up. Thayer had a lemonade stand in their neighborhood as a fundraiser for their JimmyFund Walk team.