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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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Goiter refers to an abnormal enlargement of the thyroid gland that may appear as a diffuse goiter (uniform enlargement) or nodular (single or multiple nodules). Functionally, it is classified as nontoxic (normal/low hormone levels) or toxic (excess hormone production).PathophysiologyDiffuse thyroid enlargement typically results from prolonged stimulation by thyroid-stimulating hormone (TSH) or TSH-like agents, commonly seen in hypothyroidism or iodine deficiency. In contrast, in hyperthyroid...

Hyperthyroidism I: Introduction

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Hyperthyroidism is a type of thyrotoxicosis characterized by the thyroid gland's overproduction of the thyroid hormones triiodothyronine (T3) and thyroxine (T4). This hormone excess increases the basal metabolic rate and enhances sensitivity to catecholamines.DiagnosisDiagnosis is based on clinical features and biochemical testing. It typically shows suppressed thyroid-stimulating hormone (TSH) levels below 0.4 mIU/L, with elevated free T3 and/or T4. Additional tests, including thyroid...

Graves Disease II: Pathophysiology

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Graves' Disease I: Introduction

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Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence in...

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"Sun's Seven-Step Technique" for Endoscopic En-Bloc Resection of Thyroid Cancer via the Chest-Breast Approach

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Follicular adenoma presenting as lateral aberrant thyroid.

A C Chu¹, A Mlikotic, M A R St John

¹Division of Head and Neck Surgery, UCLA Medical Center, Los Angeles, California 90095, USA. alanchu@mednet.ucla.edu

The Journal of Laryngology and Otology

|August 23, 2011

Summary

A rare case of a benign thyroid follicular adenoma presenting as a lateral neck mass highlights the importance of considering ectopic thyroid tissue and metastases in differential diagnoses.

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Area of Science:

Endocrinology
Head and Neck Surgery
Pathology

Background:

Solitary lateral neck masses are infrequently caused by true benign thyroid conditions.
Understanding the diverse etiologies of lateral neck masses is crucial for accurate diagnosis.

Observation:

This report details a unique case of a thyroid follicular adenoma presenting as a lateral neck mass.
The presentation mimicked other potential pathologies of lateral neck masses.

Findings:

Thyroid follicular adenoma can manifest as an isolated lateral neck mass.
Differential diagnosis for lateral neck masses must include ectopic thyroid tissue and metastatic thyroid carcinoma.

Implications:

Complete blood tests are recommended to assess the orthotopic thyroid gland in cases of lateral neck masses.
This case underscores the need for comprehensive evaluation to differentiate benign thyroid conditions from more serious pathologies.