Related Experiment Video
Updated: May 6, 2026

07:01
An Orthotopic Mouse Model of Anaplastic Thyroid Carcinoma
Published on: April 17, 2013
24.0K
Primary amyloid goiter mimicking rapid growing thyroid malignancy.
Kyong Hye Joung1, Jae-Yong Park, Koon Soon Kim
1Department of Internal Medicine, Research Center for Endocrine and Metabolic Diseases, School of Medicine, Chungnam National University, Daejeon, South Korea.
Summary
Localized amyloid goiter, a rare thyroid mass from amyloid accumulation, can mimic malignancy. Prompt diagnosis and surgical removal resolved symptoms in a rapidly growing case, highlighting the need for vigilance.
Area of Science:
- Endocrinology
- Pathology
- Oncology
Background:
- Amyloid goiter is a rare manifestation of primary amyloidosis, involving thyroid gland amyloid accumulation.
- Localized primary amyloid goiter, confined solely to the thyroid, represents an even rarer clinical presentation.
Observation:
- A patient presented with a rapidly enlarging thyroid mass causing dysphagia and exertional dyspnea.
- The clinical presentation mimicked thyroid malignancy, specifically anaplastic carcinoma.
Findings:
- Microscopic examination confirmed a diagnosis of amyloid goiter.
- Surgical intervention led to complete resolution of the patient's symptoms.
Implications:
- Rapidly enlarging thyroid masses with dysphagia or dyspnea warrant consideration of amyloid goiter alongside malignancy.
- Suspicion of amyloid goiter is crucial even in the absence of suspected systemic amyloidosis.
Related Concept Videos
Goiter
41
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...
41
Hyperthyroidism II: Pathophysiology
58
Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH...
58
Graves Disease II: Pathophysiology
59
Graves’ disease is an autoimmune disorder characterized by the production of thyroid-stimulating immunoglobulins (TSI) that activate TSH receptors, leading to excessive synthesis and release of thyroid hormones (T3 and T4) and resulting in hyperthyroidism.Among all causes of hyperthyroidism, Graves’ disease is the most common and can happen at any age, though it is more frequent in women. It produces a hypermetabolic state with features such as weight loss, tachycardia, tremor,...
59
Hyperthyroidism I: Introduction
64
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...
64
Graves' Disease I: Introduction
52
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...
52
The Thyroid Gland
7.1K
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.
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...
7.1K

