MRCEM Notes

Primary hyperparathyroidism

In exams, primary hyperparathyroidism is stereotypically seen in elderly females with an unquenchable thirst and an inappropriately normal or raised parathyroid hormone level. It is most commonly due to a solitary adenoma

Causes of primary hyperparathyroidism
  • 80%: solitary adenoma
  • 15%: hyperplasia
  • 4%: multiple adenoma
  • 1%: carcinoma

Features - 'bones, stones, abdominal groans and psychic moans'
  • polydipsia, polyuria
  • peptic ulceration/constipation/pancreatitis
  • bone pain/fracture
  • renal stones
  • depression
  • hypertension

Associations
  • hypertension
  • multiple endocrine neoplasia: MEN I and II

Investigations
  • raised calcium, low phosphate
  • PTH may be raised or normal
  • technetium-MIBI subtraction scan

Treatment
  • total parathyroidectomy

© Image used on license from Radiopaedia
Bilateral hand radiographs in a middle-aged woman demonstrating generalised osteopenia, erosion of the terminal phalangeal tufts (acro-osteolysis) and subperiosteal resorption of bone particularly the radial aspects of the 2nd and 3rd middle phalanges. These changes are consistent with a diagnosis of hyperparathyroidism.
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