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Related Experiment Video

Updated: Oct 20, 2025

An Ex vivo Culture System to Study Thyroid Development

An Ex vivo Culture System to Study Thyroid Development

Published on: June 6, 2014

Thyroid Hemiagenesis Accompanying an Ectopic Lingual Thyroid.

Kai-Fen Chuang¹, Jih-Chin Lee¹, Che-Jui Lee¹

¹Department of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei.

Ear, Nose, & Throat Journal

|September 16, 2021

Summary

This study reports a rare case of ectopic lingual thyroid combined with thyroid hemiagenesis. The patient remained euthyroid but experienced localized symptoms, highlighting a unique clinical presentation.

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Last Updated: Oct 20, 2025

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Area of Science:

Endocrinology
Anatomy
Medical Case Reports

Background:

Thyroid hemiagenesis is a rare congenital anomaly, often asymptomatic and incidentally discovered.
Ectopic thyroid tissue, particularly lingual thyroid, is also uncommon.
The co-occurrence of these two conditions is exceptionally rare in medical literature.

Observation:

A case of thyroid hemiagenesis was identified.
An ectopic lingual thyroid was concurrently diagnosed in the same patient.
The patient presented with symptoms related to the localized ectopic thyroid tissue.

Findings:

The patient was euthyroid, indicating normal thyroid function despite the anatomical abnormalities.
The co-existence of thyroid hemiagenesis and ectopic lingual thyroid was confirmed.
Regional symptoms were attributed to the presence of the lingual thyroid.

Implications:

This case expands the understanding of rare thyroid developmental anomalies.
It highlights the importance of considering ectopic thyroid tissue in patients with hemiagenesis, even if asymptomatic.
Further research may elucidate the embryological basis for such combined presentations and their clinical management.