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Heterotopic ThyroidUniversity of Colorado, Hospital Division of Ultrasound, 4200 East 9th Avenue, Denver, CO 80262.Amanda.Auckland{at}uch.edu Heterotopia of the thyroid gland is veryuncommon. Ectopic thyroid results from embryologicaberration characterized by the existence ofthyroid tissue in a site other than its usual locationanterior to the trachea. Ectopic thyroid tissue isusually found along the path of initial descent ofthe thyroid, representing a failure of the thyroidto descend completely. Thyroid ectopia mayalso be found in locations other than the typicalpathway of embryologic descent. It is importantto consider ectopic thyroid as a differentialdiagnosis when a mass is discovered in the neck,chest, or, rarely, other locations.
Key Words: heterotopic thyroid ectopic thyroid sonography biopsy thyroglossal duct
Journal of Diagnostic Medical Sonography, Vol. 20, No. 2,
120-123 (2004) |
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