Sinonasal teratocarcinosarcoma in an adolescent male

Sinonasal teratocarcinosarcoma is an extremely rare and aggressive neoplasm with <100 cases described in the literature and only 3 reported pediatric cases. We describe a 15-year-old male with a case of sinonasal teratocarcinosarcoma with extension to the cribriform plate. He presented with epistaxis, nasal obstruction, and frontal headaches and was treated with resection and postoperative chemoradiation. He is currently doing well without evidence of recurrence 45 months after therapy.