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Case Report
 
Triple ectopic thyroid associated with normally located pretracheal thyroid gland: A rare entity
Gabriel J. Mchonde1, Hortensia G. Nondoli2, Masato Hirakawa3
1PhD, Lecturer, Department of Biomedical Sciences, School of Medicine and Dentistry, College of Health Sciences, University of Dodoma, Dodoma-Tanzania.
2MSc, Lecturer, Department of Anatomy and Histology, School of Medicine, University of Dar Es Salaam, Dar Es Salaam-Tanzania.
3MSc, Assistant Lecturer, Department of Cell Biology and Anatomy, School of Medicine, Iwate Medical University, Iwate-Japan.

Article ID: 100013A04GM2016
doi:10.5348/A04-2016-13-CR-5

Address correspondence to:
Dr. Gabriel J. Mchonde
Department of Biomedical Sciences (Anatomy Section), School of Medicine and Dentistry
College of Health Sciences, University of Dodoma, P. O. Box 395
Dodoma
Tanzania

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How to cite this article
Mchonde GJ, Nondoli HG, Hirakawa M. Triple ectopic thyroid associated with normally located pretracheal thyroid gland: A rare entity. Edorium J Anat Embryo 2016;3:34–38.


Abstract
Introduction: Triple ectopic thyroid tissues associated with a normally located thyroid is a rare encountered anomaly among thyroid dysgenesis.
Case Report: Herein, we present a case observed during a routine dissection on a 88-year-old embalmed female cadaver who had a normally located pretracheal thyroid gland co-existed with three independent inferiorly located thyroid tissue masses extended into the superior mediastinum displacing the aortic arch and associated major vessels.
Conclusion: Thyroid dysgenesis can be genetic and inheritable due to involvement of mutations on regulatory genes required for early embryonic development of the thyroid gland. More information on these rare anatomical variations could benefit physicians, surgeons and radiologists on differential diagnosis and management strategies during their routine procedures.

Keywords: Cervical, Superior mediastinum, Thyroid anomalies, Triple ectopia


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Author Contributions
Gabriel J. Mchonde – Substantial contributions to conception and design, Acquisition of data, Analysis and interpretation of data, Drafting the article, Critical revision of the article, Final approval of the version to be published
Hortensia Nondoli G. – Analysis and interpretation of data, Critical revision of the article, Final approval of the version to be published
Masato Hirakawa – Acquisition of data, Analysis and interpretation of data, Final approval of the version to be published
Guarantor of submission
The corresponding author is the guarantor of submission.
Source of support
None
Conflict of interest
Authors declare no conflict of interest.
Copyright
© 2016 Gabriel J. Mchonde et al. This article is distributed under the terms of Creative Commons Attribution License which permits unrestricted use, distribution and reproduction in any medium provided the original author(s) and original publisher are properly credited. Please see the copyright policy on the journal website for more information.