Teratomas of the neck.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006258:Head and Neck Neoplasms / Q000175:diagnosis* / Q000453:epidemiology / Q000601:surgery; D006801:Humans; D008297:Male; D013724:Teratoma / Q000175:diagnosis* / Q000453:epidemiology / Q000601:surgery