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  • Title: [Papillary adenocarcinoma on ectopic thyroid tissue].
    Author: Dib N, Benhammou A, Meziane M, Harmouch A, Nazih N, Essakali L, Kzadri M, Sefiani S.
    Journal: Ann Otolaryngol Chir Cervicofac; 2009 Apr; 126(2):65-70. PubMed ID: 19296927.
    Abstract:
    OBJECTIVES: To report a case of papillary adenocarcinoma occurring on ectopic thyroid tissue in the hyoid bone region. MATERIAL AND METHODS: A 57-year-old patient consulted for a cervical mass appearing 1 year before, with no signs of compression. The thyroid function was normal. RESULTS: The examination showed a firm tumefaction, fixed on the hyoid bone, with undetermined limits, measuring approximately 8 cm. The thyroid gland was in the normal pretracheal position. The cervical tomodensitometry objectified an osteolytic process centered on the hyoid bone with a fleshy zone of tissue density and calcifications. Cervical MRI provided a more precise assessment of the extension of the mass and confirmed the integrity of the other structures, in particular the endo-larynx. The tumor was totally resected via a cervical approach. The pathologic study suggested a papillary adenocarcinoma on ectopic thyroid tissue. The treatment was completed by a total thyroidectomy with normal histological results. CONCLUSIONS: Papillary adenocarcinoma on ectopic thyroid is a very rare situation. Its diagnosis is histological. Its treatment is primarily surgical, sometimes associated with radioiodine I-131 therapy.
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