Medical Management and Surgical Indications of Secondary Hyperparathyroidism

  • The primary treatment for secondary hyperparathyroidism:
    • Is medical using:
      • Calcium supplementation
      • Phosphate binders
      • Vitamin D
      • Calcitriol
      • Calcimimetics:
        • Such as cinacalcet
  • Therapy is targeted to:
    • Reduce serum calcium and phosphate:
      • With improvement in medical management through the advent of:
        • Vitamin D analogs and cinacalcet:
          • Rates of parathyroidectomy for secondary hyperparathyroidism have declined
  • Indications for parathyroidectomy include:
    • Failure of medical management, including:
      • Persistent hypercalcemia
      • Persistent hyperphosphatemia
      • PTH less than 800 pg/mL
      • Additionally, uncontrollable symptoms including:
        • Intractable pruritus
        • Skeletal pain or fractures
        • Progressive extraskeletal calcifications
  • Removal of the parathyroid glands in secondary hyperparathyroidism:
    • Has been shown to quickly lower calcium, phosphorus, and PTH:
      • It is associated with greater survival in patients on hemodialysis
  • It is estimated that 0.5% to 2% of patients with end-stage renal disease:
    • Require parathyroidectomy for secondary hyperparathyroidism
  • Additional indications for surgery include:
    • Patient preference and inability to establish routine medical follow-up
  • Calciphylaxis:
    • Is a rare complication of secondary hyperparathyroidism resulting in acute deposition of calcium in tissues and skin necrosis:
      • That may lead to a systemic inflammatory response and is associated with a high rate of mortality (87% to 93%) Figure
Patient with chronic renal failure and calciphylaxis of the lower extremities. Lesions are superficial erosions with islands of intervening granulation tissue and areas of eschar. The surrounding skin was violaceous and very tender to palpation (b). Characteristic histologic findings in calciphylaxis. Photomicrograph (original magnification × 400) showing three blood vessels with surrounding mineralization, indicated by arrows.

Leave a comment