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Teratoma is a congenital tumor which occurs rarely in the head and neck. Head and neck teratomas have been described infrequently in the literature as a result of their low incidence, occuring in only 1 in 20,000 to 40,000 live births. And the heterotopic gastrointestinal cyst, a type of choristoma, is uncomon in head and neck also. Patients with these tumors have symptoms related to difficulties with swallowing and respiration that could result in high degre of morbidity and mortality by nasopharynx and a heterotopic gastrointestinal cyst of left submandibular gland. We review the literature pertaining to teratoma and heterotopic gastrointestinal cyst in head and neck. (Korean J Otolaryngol 2003 ;46 :536-9)