title: An intra-thyroid thyroglossal duct cyst.
abstract: Thyroglossal duct cysts can be found in several different locations, although intra-thyroid presentations are rare. We present the case of an 11-year-old patient with a visible neck mass on the right thyroid lobe. On sonogram, it was consistent with a unilocular cyst measuring 2 centimeters in diameter. The cyst did not take up the radioisotope during a gammagram. Fine needle aspiration cytology suggested a diagnosis of thyroglossal duct cyst. At surgery, we found that there were no lesion-dependent thyroglossal tracts; we therefore performed a simple enucleation of the cyst, sparing the rest of the gland. The pathologic examination confirmed that it was an intra-thyroid thyroglossal duct cyst. After 8 months of follow-up, the patient has remained without complications of any kind or recurrence. Only four prior cases of intra-thyroid thyroglossal cysts have been described in the pediatric population. Half of them presented with a typical thyroglossal tract crossing the hyoid and the other half presented an isolated cyst. It is highly unlikely that a cold, cystic, thyroid mass in a child is a thyroglossal duct cyst. Diagnosis is made on the basis of fine needle aspiration cytology and the lesion is treated surgically. A thyroglossal tract must be methodically sought out during intervention, although they frequently do not exist.
authors.affiliation: Department of Pediatric Surgery, Hospital Vírgen del Camino, Pamplona, Navarre, Spain. aperezma@cfnavarra.es
authors.forename: A
authors.initials: A
authors.lastname: Pérez-Martínez
authors.forename: L
authors.initials: L
authors.lastname: Bento-Bravo
authors.forename: M A
authors.initials: MA
authors.lastname: Martínez-Bermejo
authors.forename: J
authors.initials: J
authors.lastname: Conde-Cortes
authors.forename: C
authors.initials: C
authors.lastname: de Miguel-Medina
mesh_terms: D002648:Child; D006801:Humans; D008297:Male; D013955:Thyroglossal Cyst / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D014463:Ultrasonography