Elevated serum parathormone level after "concise parathyroidectomy" for primary sporadic hyperparathyroidism.

Area of Science:

• Endocrinology
• Surgical Outcomes
• Metabolic Bone Disease

Background:

• Traditional assessment of parathyroid surgery success relies on serum calcium 6 months postoperatively.
• Postoperative normocalcemic hyperparathormonemia is a recognized phenomenon with uncertain clinical significance.

Purpose of the Study:

• To investigate the incidence and significance of normocalcemic hyperparathormonemia after parathyroidectomy.
• To evaluate the impact of calcium and vitamin D supplementation on postoperative PTH levels.

Main Methods:

• Prospective study of 380 patients undergoing initial parathyroidectomy for primary hyperparathyroidism.
• Measurement of intact serum parathyroid hormone (PTH) and calcium levels at over 5 months post-surgery.
• Monitoring patients with normocalcemic hyperparathormonemia and assessing the effect of oral calcium and vitamin supplements.

Main Results:

• Normocalcemic PTH elevation occurred in 28% of patients, more frequently after double adenoma resection.
• This elevation preceded recurrent hypercalcemia in cases of unrecognized multiglandular disease.
• Early calcium and vitamin D supplementation significantly reduced the likelihood of elevated postoperative PTH levels.

Conclusions:

• Compensatory normocalcemic PTH elevation is frequent after successful parathyroid surgery, potentially due to dietary deficiencies.
• Supplementation with calcium and vitamin D can prevent or normalize this condition.
• Patients with elevated PTH should be evaluated for dietary deficiencies and monitored for residual disease.