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Elif Hindié, MD, PhD; Didier Mellière, MD; Christian Jeanguillaume, MD; Pablo Ureña, MD; Claire deLabriolle-Vaylet, MD; Léon Perlemuter, MD

Arch Surg. 2000;135:1461-1468.

Hypothesis  Parathyroid scanning, based on simultaneous recording of technetium Tc 99m sestamibi and iodine 123 images, is able to identify patients with multiple parathyroid gland disease and is a safe imaging technique for unilateral parathyroid surgery.

Design  Scintigraphic criteria of eligibility for unilateral surgery were prospectively tested against findings of conventional bilateral surgery.

Setting  Patients referred to an endocrine surgeon in a university hospital.

Patients  Seventy consecutive patients with primary hyperparathyroidism had dual-isotope scanning before conventional surgery. Forty-one patients had scan findings compatible with unilateral surgery, with a single focus of high intensity seen on the anterior and lateral views. The remaining 29 patients had 1 or more criteria of ineligibility: (1) scan findings pointing to multiple gland disease, (2) no well-identified focus, (3) contralateral thyroid nodule requiring surgical management, or (4) family history of hyperparathyroidism or multiple endocrine disease.

Main Outcome Measures  Number of enlarged parathyroid glands at surgical inspection and calcemia follow-up.

Results  None of the 41 patients, with a single well-defined focus on the scan image, showed evidence of multiple parathyroid involvement. Each parathyroid adenoma was resected from the precise site predicted by the subtraction scan. Nine patients (13%) had surgical findings of multiple parathyroid gland disease. All 9 were ineligible based on preoperative image findings.

Conclusions  Unilateral surgery can be safely offered to 60% of patients with primary hyperparathyroidism, on the basis of simultaneous ^99mTc-sestamibi and ¹²³I scanning. This may reduce the length of the operation, anesthesia requirements, and hospital stay, and the risks of hypoparathyroidism and injury to the recurrent laryngeal nerve.

From the Department of Nuclear Medicine, Hôpital St-Antoine, Assistance Publique-Hôpitaux de Paris, Paris (Drs Hindié and deLabriolle-Vaylet); the Departments of Endocrine Surgery (Dr Mellière), Nuclear Medicine (Dr Jeanguillaume), and Endocrinology (Dr Perlemuter), Hôpital Henri Mondor, Créteil; and the Nephrology Unit, Clinique de l'Orangerie, Aubervilliers (Dr Ureña), France.

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