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Primary hyperparathyroidism.

A E Broadus1

  • 1Department of Internal Medicine, Yale University, New Haven, Connecticut.

The Journal of Urology
|March 1, 1989
PubMed
Summary
This summary is machine-generated.

Primary hyperparathyroidism, a condition causing high calcium levels, is increasingly diagnosed, especially in older adults. Early diagnosis and parathyroid surgery are key for managing associated kidney stone complications.

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Area of Science:

  • Endocrinology
  • Nephrology
  • Metabolic Bone Disease

Background:

  • Primary hyperparathyroidism (PHP) was initially linked to severe bone disease (osteitis fibrosa cystica).
  • Renal stones became recognized as a more common complication of PHP than bone disease by the mid-20th century.
  • Routine serum calcium testing since the 1970s has increased PHP diagnosis, particularly in older individuals with subtle symptoms.

Purpose of the Study:

  • To review the historical and current understanding of primary hyperparathyroidism.
  • To highlight the shift in clinical presentation and complications of PHP.
  • To emphasize the diagnostic challenges and treatment of PHP-associated kidney stones.

Main Methods:

  • Historical review of clinical presentations and diagnostic approaches for primary hyperparathyroidism.

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  • Analysis of the changing frequency of bone disease versus renal stones as complications.
  • Discussion of the role of serum calcium and hypercalciuria in diagnosis.

    • Main Results:

    • Renal stones were present in ~50% of PHP patients through the 1970s; now <10% present with stones.
    • PHP is diagnosed in 1-5% of patients with calcium stones.
    • Hypercalciuria, driven by vitamin D, is the primary risk factor for stones, often disproportionate to mild hypercalcemia.

    Conclusions:

    • Primary hyperparathyroidism diagnosis has shifted towards milder, often asymptomatic cases.
    • Hypercalciuria disproportionate to hypercalcemia is characteristic, especially in normocalcemic PHP.
    • Parathyroid surgery remains the preferred treatment for PHP with kidney stone complications.