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Parathyroid Localization With High-Resolution Ultrasound and Technetium Tc 99m Sestamibi
Gretchen P. Purcell, MD, PhD;
Frederick M. Dirbas, MD;
R. Brooke Jeffrey, MD;
Michael J. Lane, MD;
Terry Desser, MD;
I. Ross McDougall, MD, PhD;
Ronald J. Weigel, MD, PhD
Arch Surg. 1999;134:824-830.
Hypothesis High-resolution ultrasound and technetium Tc 99m sestamibi scanning can be used for preoperative localization of abnormal parathyroid glands in patients with hyperparathyroidism.
Design Ultrasound and sestamibi scanning were performed in patients undergoing neck exploration for hyperparathyroidism. If the 2 scans agreed in identifying a single adenoma, and surgery confirmed the location of a single adenoma and an ipsilateral normal gland, a unilateral exploration was performed.
Setting University tertiary care center.
Patients Sixty-one consecutive patients undergoing surgery for hyperparathyroidism from September 1, 1994, through September 30, 1997.
Interventions High-resolution ultrasound was performed in 59 patients and sestamibi scanning in 58 patients; all patients underwent neck exploration by a single surgeon.
Main Outcome Measures The results of preoperative ultrasound and sestamibi scanning were compared with operative and histological findings.
Results All patients were cured of hypercalcemia. Specificity of ultrasound and sestamibi scanning was 98% and 99%, respectively; however, their sensitivity was only 57% and 54%, respectively. Both imaging modalities had lower sensitivities in the setting of multigland disease. If both imaging studies were considered as a single test, sensitivity for imaging in patients with primary hyperparathyroidism reached 78%. Our localization protocol allowed a unilateral approach in 43% of patients (23 of 53).
Conclusions These results confirm the value of preoperative localization in patients with hyperparathyroidism. A unilateral approach can be used with a high degree of success in cases when ultrasound and sestamibi scanning agree in the identification of a single adenoma confirmed by surgical exploration with the identification of a normal ipsilateral gland.
From the Departments of Surgery (Drs Purcell, Dirbas, and Weigel), Radiology (Drs Jeffrey, Lane, Desser, and McDougall), and Internal Medicine (Dr McDougall), Stanford University, Stanford, Calif. Dr Purcell is now with the Department of Surgery, Duke University Medical Center, Durham, NC.
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