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Correct preoperative localization: does it permit a change in operative strategy for primary hyperparathyroidism?
O Zmora1, P P Schachter, Z Heyman
1Department of Surgery, Sheba Medical Center, Tel-Hashomer, Israel.
Surgery
|December 1, 1995
Summary
Preoperative imaging for primary hyperparathyroidism can miss contralateral glands, leading to high surgical failure rates with unilateral neck exploration. Bilateral exploration remains the gold standard for ensuring successful treatment.
Area of Science:
- Endocrinology
- Surgical Oncology
- Medical Imaging
Background:
- Primary hyperparathyroidism is typically treated with bilateral neck exploration, achieving high cure rates.
- Preoperative imaging and unilateral exploration are debated for cost-effectiveness and efficacy.
- This study assesses the risk of missed contralateral parathyroid glands with preoperative localization.
Purpose of the Study:
- To evaluate the accuracy of preoperative imaging in localizing parathyroid glands.
- To determine the risk of missing contralateral pathologic parathyroid glands.
- To assess the feasibility and success rate of unilateral neck exploration guided by imaging.
Main Methods:
- 79 patients with primary hyperparathyroidism underwent preoperative ultrasonography and/or nuclear imaging.
- 58 patients had confirmed localization of enlarged glands.
- All patients underwent meticulous bilateral neck exploration.
Main Results:
- Unilateral exploration was only feasible in 73.4% of cases based on imaging.
- 5 patients (8.6%) had an undetected contralateral enlarged gland.
- False-positive rates were 1.7% for ultrasonography and 13% for nuclear imaging.
Conclusions:
- Unilateral neck exploration guided by preoperative imaging has an unacceptably high failure rate.
- Bilateral neck exploration by an experienced endocrine surgeon is superior.
- The cost-effectiveness of preoperative imaging for primary hyperparathyroidism is questionable.