Fine needle aspiration diagnosis of a nasopharyngeal teratoma

A newborn presented with airway obstruction due to a large nasopharyngeal mass extending into the oropharynx. A diagnosis of teratoma was made by transoral fine needle aspiration (FNA) biopsy and confirmed by subsequent histologic studies. The cytologic features of nasopharyngeal teratoma are presented, and the diagnostic utility of FNA biopsy in evaluating such lesions is discussed.