Management of Primary Hyperparathyroidism with Negative Imaging

Diagnostic Confirmation and Initial Evaluation

• Biochemical confirmation of primary hyperparathyroidism should be established before proceeding with management decisions, as imaging has no role in confirming or excluding the diagnosis 1

Surgical Management Options

• Bilateral neck exploration under general anesthesia is the standard approach when preoperative localization studies are negative, allowing for identification of all parathyroid glands, which is crucial as multigland disease should be routinely considered 1

Advanced Localization Techniques for Negative Initial Imaging

• 4D-CT parathyroid scan has reported sensitivities ranging from 62% to 88% 1
• Selective venous sampling for PTH levels may be considered for surgical candidates with non-localizing or equivocal results on standard imaging, with reported sensitivities ranging from 40% to 93% 2
• Venous sampling is invasive and typically reserved for reoperative cases 2

Special Considerations

• For patients with tertiary hyperparathyroidism, parathyroidectomy should be considered despite negative imaging 3
• Failing to consider multigland disease, which is more difficult to localize with standard imaging, can lead to inadequate treatment 1