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Ectopic Thyroid Tissue (ectopic + thyroid_tissue)
Selected AbstractsHistological Characterization of the Thyroglossal Tract: Implications for Surgical Management,THE LARYNGOSCOPE, Issue 6 2001Rakesh K. Chandra MD Abstract Objectives In the current report, we characterized the relationship between the central hyoid bone and the thyroglossal tract and determined the prevalence of ectopic thyroid follicles in the adjacent soft tissues. Study Design Retrospective pathological analysis. Methods The resected specimens from 104 patients who underwent a modified Sistrunk procedure with wide-field dissection were retrospectively analyzed. Under light microscopy, serial sections were examined to determine whether the thyroglossal tract passed anterior to, posterior to, or within the hyoid bone. Specimens were also examined for the presence of thyroid follicles in the periductal and pericystic soft tissues. Results In 50 cases (48%), the tract position in relation to the hyoid bone could not be identified secondary to extensive arborization, marked inflammation, specimen fragmentation or a combination of these. Thyroid follicles were observed in 9 (18%) of these specimens. In the remaining 54 cases (52%) the tract was located anterior to the central arch of the hyoid bone in 39 (72%) and posterior to it in 15 (28%). Thyroid tissue was observed in 46% of specimens (P = .004), regardless of whether the tract was anterior or posterior. Conclusions These results demonstrate that tract position often cannot be defined, but when a portion is dominant, it is likely to be anterior to the hyoid bone. Ectopic thyroid tissue can be found in almost 50% of specimens when the tract position is identifiable. With appropriate surgical management, a recurrence rate of less than 4% can be expected, despite the presence of ductule multiplicity, marked inflammation, tract position posterior to the hyoid bone, and ectopic thyroid follicles. [source] Dual thyroid ectopia with a normally located pretracheal thyroid gland: Case report and literature reviewHEAD & NECK: JOURNAL FOR THE SCIENCES & SPECIALTIES OF THE HEAD AND NECK, Issue 9 2007Ting-Shuo Huang MD Abstract Background. Only 1 case with dual thyroid ectopy and a normally located thyroid gland has been reported. Methods. We present the case of a 71-year-old woman who had 1-sided lateral neck swelling in the right submandibular space, which grew and doubled in size within 1 year. A CT scan demonstrated 2 right submandibular, lobulated, heterogeneously enhanced masses, an ectopic lingual thyroid, and bilateral thyroid goiter. A Tc-99m sodium pertechnetate thyroid scan revealed a cold area in the right lateral neck region below the submandibular gland, an ectopic lingual thyroid, and bilateral pretracheal thyroids. She underwent total thyroidectomy and en bloc excision of right neck masses. Thyroxin was prescribed following the surgery. Results. Pathological diagnoses were ectopic thyroid tissue with goitrous change and bilateral thyroid goiter. Conclusion. This report demonstrates that dual ectopic thyroid tissue accompanying a normally located thyroid gland can exist and should be differentiated from head and neck malignancies. © 2007 Wiley Periodicals, Inc. Head Neck 2007 [source] Benign ectopic thyroid tissue in a cutaneous location: a case report and reviewJOURNAL OF CUTANEOUS PATHOLOGY, Issue 2 2004Kim Maino Background:, For many years, lateral, aberrant thyroid tissue in adults was a term used almost exclusively for metastatic thyroid carcinoma. However, aberrant, benign ectopic thyroid tissue does occur, and it is most commonly found as a part of the evaluation of endocrine dysfunction. Rarely, aberrant, benign ectopic thyroid presents as a primary mass. Case report:, We present a 35-year-old female who presented for removal of a lifelong posterior lateral neck nodule. Results:, Histologic examination and immunohistochemical studies confirmed the presence of aberrant, benign ectopic thyroid tissue. The patient had no endocrine problems, and she had a normally located and functioning thyroid gland. Conclusions:, This case illustrates that not all aberrant thyroid tissues in adults are malignant or associated with endocrine disorders. This case also illustrates the rare association of ectopic thyroid and a normally located and functioning thyroid gland. In this patient, a somatic mutation in a transcription factor important in thyroid migration could explain these findings. [source] | ||||||||||