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Related Concept Videos

The Parathyroid Glands00:59

The Parathyroid Glands

The two pairs of parathyroid glands embedded within the posterior surface of the thyroid gland are restricted by a dense capsule around them. These glands comprise two distinct cell populations—parathyroid oxyphil and parathyroid principal cells- pivotal in calcium homeostasis.
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by producing...
Hyperthyroidism II: Pathophysiology01:27

Hyperthyroidism II: Pathophysiology

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 receptors...
Hormones and Bone Tissue01:17

Hormones and Bone Tissue

The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Graves Disease II: Pathophysiology01:24

Graves Disease II: Pathophysiology

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, and heat...
Synthesis and Functions of Calcitonin00:51

Synthesis and Functions of Calcitonin

Calcitonin, a vital polypeptide hormone, regulates calcium levels within body fluids. It is released by the parafollicular cells, also known as C cells, situated in the follicular epithelium of the thyroid gland. Calcitonin responds to fluctuations in blood calcium levels and the influence of gastrointestinal hormones like gastrin and cholecystokinin.
The exact mechanisms by which calcitonin operates in calcium homeostasis remain elusive, but its significance is evident in several vital...
Hyperthyroidism I: Introduction01:25

Hyperthyroidism I: Introduction

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...

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Related Experiment Video

Updated: Jun 12, 2026

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
07:12

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging

Published on: August 17, 2022

Parathyroid carcinoma.

B Givi1, J P Shah

  • 1Head and Neck Service, Department of Surgery, 1275 York Ave, Memorial Sloan-Kettering Cancer Center, New York 10065, USA.

Clinical Oncology (Royal College of Radiologists (Great Britain))
|June 1, 2010
PubMed
Summary
This summary is machine-generated.

Parathyroid carcinoma, a rare endocrine cancer, often presents with hypercalcemia. Surgical removal is key, though recurrence is common, necessitating ongoing management of high calcium levels.

Related Experiment Videos

Last Updated: Jun 12, 2026

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
07:12

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging

Published on: August 17, 2022

Area of Science:

  • Endocrinology
  • Oncology
  • Genetics

Background:

  • Parathyroid carcinoma is a rare endocrine malignancy, accounting for 0.5-5% of primary hyperparathyroidism cases.
  • While the exact cause is unknown, genetic mutations, particularly in the HPRT2 gene, are implicated in its pathogenesis.
  • The disease typically affects individuals in their fourth or fifth decade, with no significant gender predilection.

Purpose of the Study:

  • To review the epidemiology, pathogenesis, clinical presentation, and diagnostic work-up of parathyroid carcinoma.
  • To detail surgical management strategies for various scenarios.
  • To discuss other treatment modalities and the management of incurable disease.

Main Methods:

  • Literature review and synthesis of existing data on parathyroid carcinoma.
  • Analysis of epidemiological trends, genetic factors, and clinical manifestations.
  • Evaluation of treatment outcomes, including surgical interventions and long-term management.

Main Results:

  • Most patients present with symptomatic hypercalcemia; non-functioning tumors are rare.
  • Surgical resection is the primary treatment, but recurrence is frequent, often requiring multiple operations.
  • Morbidity and mortality are mainly due to chronic hypercalcemia complications, not tumor burden.

Conclusions:

  • Parathyroid carcinoma is a slow-growing but progressive malignancy.
  • Effective management involves surgical resection and vigilant monitoring for recurrence and hypercalcemia.
  • Multidisciplinary care is essential for optimizing patient outcomes.