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Related Concept Videos

The Parathyroid Glands00:59

The Parathyroid Glands

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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...
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Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies01:28

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Peptic ulcer disease (PUD) presents with diverse symptoms depending on the location and severity of the ulcer. Clinical manifestations of peptic ulcer include dull pain and a burning sensation in the mid-epigastric region.
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Hormones and Bone Tissue01:17

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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.
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Skeleton and Calcium Homeostasis01:21

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Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
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Myasthenia Gravis: Diagnostic Tests01:15

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Related Experiment Video

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Chapter 2: Primary Hyperparathyroidism: diagnosis.

Benjamin Bouillet1, Jean-Philippe Bertocchio2, Claire Nominé-Criqui3

  • 1Department of Endocrinology, Diabetology and Nutrition, CHU de Dijon, 21000 Dijon, France; Inserm Research Center U1231, Padys Team, 21000 Dijon, France; University of Burgundy, 21000 Dijon, France.

Annales D'Endocrinologie
|January 16, 2025
PubMed
Summary

Primary hyperparathyroidism is often asymptomatic, requiring screening for organ damage. Diagnosis relies on biological markers like blood calcium and parathyroid hormone levels, especially in atypical cases.

Keywords:
AsymptomaticBiological diagnosisHypercalcemiaOsteoarticular involvementPrimary hyperparathyroidismRenal involvement

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Area of Science:

  • Endocrinology
  • Biochemistry

Background:

  • Primary hyperparathyroidism (PHPT) is increasingly diagnosed in asymptomatic individuals due to routine blood calcium screening.
  • Classical clinical signs of PHPT involve bone, kidney, and muscle, which may reverse after parathyroid surgery.
  • Non-classical manifestations affecting cardiovascular, digestive, and neuropsychological systems are also recognized, with uncertain reversibility post-surgery.

Purpose of the Study:

  • To outline diagnostic strategies for primary hyperparathyroidism, focusing on identifying target organ damage in asymptomatic patients.
  • To differentiate between typical and atypical forms of PHPT based on biological markers.
  • To highlight diagnostic tools for atypical PHPT presentations.

Main Methods:

  • Systematic blood calcium assays for screening.
  • Evaluation of classical (bone, kidney, muscle) and non-classical (cardiovascular, digestive, neuropsychological) signs.
  • Biological diagnosis based on parathyroid hormone (PTH) levels relative to blood calcium.
  • Assessment of hypercalcemia, elevated PTH, and calciuria/calcium excretion fraction in typical PHPT.
  • Diagnostic approaches for atypical forms, including normal PTH with hypercalcemia or normal calcemia with elevated PTH, considering conditions like vitamin D deficiency.
  • Utilization of the oral calcium loading test and Pro-FHH score for atypical cases.

Main Results:

  • The diagnosis of PHPT increasingly relies on detecting organ damage in asymptomatic patients.
  • Classical signs are reversible post-surgery, while non-classical signs have uncertain reversibility.
  • Typical PHPT is characterized by hypercalcemia, elevated PTH, and increased calciuria.
  • Atypical forms present diagnostic challenges, requiring specific tests like the oral calcium loading test and Pro-FHH score.

Conclusions:

  • Systematic screening and assessment for target organ damage are crucial for diagnosing asymptomatic primary hyperparathyroidism.
  • Biological markers, particularly the relationship between calcium and PTH, are key to diagnosis.
  • Atypical presentations necessitate specialized diagnostic tools to ensure accurate identification and management of PHPT.