Intrinsic limitations to unilateral parathyroid exploration

Area of Science:

• Endocrinology
• Surgical Oncology
• Medical Diagnostics

Background:

• Preoperative localization of parathyroid adenomas is crucial but often underdiagnoses multiglandular disease.
• The rapid intraoperative parathyroid hormone assay aids in identifying multiglandular disease by monitoring hormone levels post-excision.
• A combined approach using localization and hormone assays offers potential for successful limited parathyroid exploration.

Purpose of the Study:

• To evaluate a combined method for limited parathyroid exploration in primary hyperparathyroidism.
• To assess the efficacy of preoperative localization and intraoperative parathyroid hormone assays in guiding surgical strategy.
• To determine the success rate of limited parathyroid exploration in achieving a cure for primary hyperparathyroidism.

Main Methods:

• Forty-eight patients with primary hyperparathyroidism underwent preoperative localization studies.
• Forty-five patients proceeded to unilateral parathyroid exploration, with success confirmed by rapid parathyroid hormone assay.
• Intraoperative management and 3-month follow-up were recorded for all patients.

Main Results:

• Sixty-seven percent (32/48) of patients had successful unilateral exploration, confirmed by parathyroid hormone level drop and clinical follow-up.
• Of 16 patients requiring bilateral exploration, 7 had non-falling hormone levels, with 5 diagnosed with multiglandular disease.
• Inaccurate localization led to bilateral exploration in 5 patients, with 4 others undergoing bilateral exploration for technical or localization reasons.

Conclusions:

• Unilateral parathyroid exploration success is limited by the 15% incidence of multiglandular disease and localization inaccuracies.
• While theoretically an 85% unilateral exploration rate is possible, practical application suggests a more realistic expectation of 70%.