Dual ectopic thyroid associated with thyroid hemiagenesis

We report a case of a 15-year-old girl with a midline neck mass that was first noted 2 or 3 years previously. She had been treated with levothyroxine (L-T4) for congenital hypothyroidism until 11 years of age. Ultrasonography revealed an atrophic right thyroid (1.0 × 1.6 × 2.6 cm in size) and a mass...

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Main Authors: Shigenori Nakamura, Teruyuki Masuda, Masatoshi Ishimori
Format: Article
Language:English
Published: Bioscientifica 2018-04-01
Series:Endocrinology, Diabetes & Metabolism Case Reports
Online Access:https://www.edmcasereports.com/articles/endocrinology-diabetes-and-metabolism-case-reports/10.1530/EDM-18-0026
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author Shigenori Nakamura
Teruyuki Masuda
Masatoshi Ishimori
author_facet Shigenori Nakamura
Teruyuki Masuda
Masatoshi Ishimori
author_sort Shigenori Nakamura
collection DOAJ
description We report a case of a 15-year-old girl with a midline neck mass that was first noted 2 or 3 years previously. She had been treated with levothyroxine (L-T4) for congenital hypothyroidism until 11 years of age. Ultrasonography revealed an atrophic right thyroid (1.0 × 1.6 × 2.6 cm in size) and a mass (2.3 × 1.0 × 3.5 cm in size) in the upper part of the neck. No left lobe of the thyroid was detected. On further evaluation, Tc-99m pertechnetate thyroid scintigraphy and CT showed ectopic thyroid tissue in the lingual region and infrahyoid region. Thus, she was diagnosed as having dual ectopic thyroid and thyroid hemiagenesis. The atrophic right thyroid was thought be non-functional. Treatment with L-T4 was started to reduce the size of the dual ectopic thyroid tissue. This may be the first reported case of dual ectopic thyroid associated with hemiagenesis detected only by ultrasonography.
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spelling doaj.art-d408524397574fa282d9755a8da006e02022-12-21T17:16:37ZengBioscientificaEndocrinology, Diabetes & Metabolism Case Reports2052-05732052-05732018-04-01111410.1530/EDM-18-0026Dual ectopic thyroid associated with thyroid hemiagenesisShigenori Nakamura0Teruyuki Masuda1Masatoshi Ishimori2Thyroid and Diabetic Division, Department of Internal Medicine, Japanese Red Cross Gifu Hospital, Gifu, JapanThyroid and Diabetic Division, Department of Internal Medicine, Japanese Red Cross Gifu Hospital, Gifu, JapanThyroid and Diabetic Division, Department of Internal Medicine, Japanese Red Cross Gifu Hospital, Gifu, JapanWe report a case of a 15-year-old girl with a midline neck mass that was first noted 2 or 3 years previously. She had been treated with levothyroxine (L-T4) for congenital hypothyroidism until 11 years of age. Ultrasonography revealed an atrophic right thyroid (1.0 × 1.6 × 2.6 cm in size) and a mass (2.3 × 1.0 × 3.5 cm in size) in the upper part of the neck. No left lobe of the thyroid was detected. On further evaluation, Tc-99m pertechnetate thyroid scintigraphy and CT showed ectopic thyroid tissue in the lingual region and infrahyoid region. Thus, she was diagnosed as having dual ectopic thyroid and thyroid hemiagenesis. The atrophic right thyroid was thought be non-functional. Treatment with L-T4 was started to reduce the size of the dual ectopic thyroid tissue. This may be the first reported case of dual ectopic thyroid associated with hemiagenesis detected only by ultrasonography.https://www.edmcasereports.com/articles/endocrinology-diabetes-and-metabolism-case-reports/10.1530/EDM-18-0026
spellingShingle Shigenori Nakamura
Teruyuki Masuda
Masatoshi Ishimori
Dual ectopic thyroid associated with thyroid hemiagenesis
Endocrinology, Diabetes & Metabolism Case Reports
title Dual ectopic thyroid associated with thyroid hemiagenesis
title_full Dual ectopic thyroid associated with thyroid hemiagenesis
title_fullStr Dual ectopic thyroid associated with thyroid hemiagenesis
title_full_unstemmed Dual ectopic thyroid associated with thyroid hemiagenesis
title_short Dual ectopic thyroid associated with thyroid hemiagenesis
title_sort dual ectopic thyroid associated with thyroid hemiagenesis
url https://www.edmcasereports.com/articles/endocrinology-diabetes-and-metabolism-case-reports/10.1530/EDM-18-0026
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AT teruyukimasuda dualectopicthyroidassociatedwiththyroidhemiagenesis
AT masatoshiishimori dualectopicthyroidassociatedwiththyroidhemiagenesis