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World Journal of Surgery

Published in:

01-05-2008

Can a Lightbulb Sestamibi SPECT Accurately Predict Single-Gland Disease in Sporadic Primary Hyperparathyroidism?

Authors: Linwah Yip, Daniel A. Pryma, John H. Yim, Mohamed A. Virji, Sally E. Carty, Jennifer B. Ogilvie

Published in: World Journal of Surgery | Issue 5/2008

Abstract

Background

Technetium-99m sestamibi scintigraphy with single photon emission computed tomography (SPECT) is widely used to guide minimally invasive exploration in patients with sporadic primary hyperparathyroidism (SPH), although its sensitivity in multiglandular disease is limited. We examined the incidence of missed multiglandular disease and associated anatomic findings when sestamibi SPECT was positive for a single intense focus of delayed tracer uptake, termed a lightbulb scan (LBS).

Methods

Prospectively entered data from 764 patients with SPH treated with initial parathyroid exploration from March 5, 2000, to December 31, 2006, were reviewed. A single radiologist performed blinded interpretation of 585 available sestamibi SPECT images, classifying 167 (28.5%) patients with a LBS. Clinical findings were compared among LBS patients with a single adenoma (true positive) and LBS patients with multiglandular disease (false negative).

Results

One hundred fifty of 167 (89.8%) LBS patients had a single adenoma and 3 (1.8%) had carcinoma. Multiglandular disease was anatomically present in 14 of 167 (8.4%) LBS patients compared with 60 of 418 (15.6%) non-LBS patients (p = 0.05). Parathyroid hyperplasia occurred less frequently in LBS patients [5/167 (3%)] compared with non-LBS patients [36/418 (8.6%)], (p = 0.02), while double adenomas occurred equally often in LBS patients [9/167 (5.4%)] compared with non-LBS patients [24/418 (5.7%)], (p = 0.87). Double adenomas in LBS patients were more likely ipsilateral (7/9, p = 0.005) and left-sided (7/7, p = 0.008). LBS patients with multiglandular disease were more likely to have a history of neck irradiation, prior neck exploration, and concomitant thyroid pathology.

Conclusions

In patients with SPH, sestamibi SPECT studies show a single bright focus of uptake in only 29% of patients. LBS findings do not exclude multiglandular disease. To avoid unacceptable rates of failure at initial parathyroid exploration, the expert surgeon should use validated adjuncts such as intraoperative PTH monitoring or four-gland exploration.

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Title: Can a Lightbulb Sestamibi SPECT Accurately Predict Single-Gland Disease in Sporadic Primary Hyperparathyroidism?
Authors: Linwah Yip
Daniel A. Pryma
John H. Yim
Mohamed A. Virji
Sally E. Carty
Jennifer B. Ogilvie
Publication date: 01-05-2008
Publisher: Springer-Verlag
Published in: World Journal of Surgery / Issue 5/2008
Print ISSN: 0364-2313
Electronic ISSN: 1432-2323
DOI: https://doi.org/10.1007/s00268-008-9532-x

At a glance: The STEP trials

Springer Medicine

Can a Lightbulb Sestamibi SPECT Accurately Predict Single-Gland Disease in Sporadic Primary Hyperparathyroidism?

Abstract

Background

Methods

Results

Conclusions

At a glance: The STEP trials

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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