Should vitamin D deficiency be corrected before parathyroidectomy?

Area of Science:

• Endocrinology
• Surgical Oncology
• Nutritional Science

Background:

• Vitamin D deficiency is prevalent in primary hyperparathyroidism patients.
• The necessity of vitamin D repletion before parathyroidectomy remains debated.
• This study investigates the impact of vitamin D status on surgical outcomes.

Purpose of the Study:

• To assess the effect of vitamin D deficiency on parathyroid gland resection extent.
• To evaluate the risk of postoperative hypocalcemia in vitamin D deficient patients undergoing parathyroidectomy.
• To determine if vitamin D status influences surgical cure rates and recurrence of hyperparathyroidism.

Main Methods:

• Retrospective analysis of 1887 patients with primary hyperparathyroidism undergoing parathyroidectomy (2000-2015).
• Patients were stratified into two groups: normal vitamin D (≥30 ng/mL) and deficient (<30 ng/mL).
• Comparison of preoperative hormone levels, extent of resection, and postoperative complications including hypocalcemia, persistent, and recurrent hyperparathyroidism.

Main Results:

• Vitamin D deficiency was associated with higher preoperative parathyroid hormone and calcium levels.
• Patients with vitamin D deficiency were less likely to require removal of more than one gland for cure.
• Rates of persistent, recurrent hyperparathyroidism, and postoperative hypocalcemia were similar between groups.

Conclusions:

• Vitamin D repletion should not postpone parathyroid surgery for primary hyperparathyroidism.
• Vitamin D deficient patients can achieve similar surgical cure rates with a single gland excision.
• There is no increased risk of recurrence or hypocalcemia in vitamin D deficient patients post-parathyroidectomy.