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The Thyroid Gland

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The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
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Related Experiment Video

Updated: Dec 18, 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: a case report.

Bülent Çitgez¹, Gürkan Yetkin¹, Mehmet Uludağ¹

¹Department of General Surgery, Şişli Etfal Training and Research Hospital, İstanbul, Turkey.

Turkish Journal of Surgery

|June 20, 2020

Summary

This summary is machine-generated.

Thyroid hemiagenesis, a rare developmental anomaly, involves the absence of one thyroid lobe. This case highlights ultrasonography

Keywords:

Thyroid hemiagenesis surgery

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Area of Science:

Endocrinology
Developmental Biology
Medical Imaging

Background:

Thyroid hemiagenesis is a rare congenital anomaly.
It can stem from abnormal thyroid lobe descent or agenesis.
This condition is infrequently documented in medical literature.

Observation:

A patient presented with neck pain and swelling.
Neck ultrasonography incidentally revealed thyroid hemiagenesis.
The left thyroid lobe was absent, with nodules present in the right lobe.

Findings:

Fine Needle Aspiration Biopsy indicated follicular neoplasia.
Surgical intervention involved right subtotal thyroidectomy.
The case underscores the rarity of thyroid hemiagenesis.

Implications:

Ultrasonography plays a crucial role in diagnosing thyroid hemiagenesis.
Accurate preoperative diagnosis aids in effective patient management.
This case contributes to understanding rare thyroid developmental anomalies.