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Published in: Endocrine 1/2018

01-04-2018 | Endocrine Methods and Techniques

Pre-operative localization of abnormal parathyroid tissue by 99mTc-sestamibi in primary hyperparathyroidism using four-quadrant site analysis: an evaluation of the predictive value of vitamin D deficiency

Authors: Yu-Kwang Donovan Tay, Randy Yeh, Jennifer H. Kuo, Catherine McManus, James A. Lee, John P. Bilezikian

Published in: Endocrine | Issue 1/2018

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Abstract

Context

Accurate preoperative localization of abnormal parathyroid tissue aids importantly in minimally invasive parathyroidectomy in patients with primary hyperparathyroidism. Vitamin D deficiency may possibly influence the success and characteristics of pre-operative localization because it is associated with more active disease and possibly larger adenomas. This could increase the sensitivity of the sestamibi to identify abnormal parathyroid tissue, but earlier reports are conflicting. Vitamin D deficiency could also influence the nature of preoperative localization because it could lead to multi-gland stimulation of parathyroid tissue giving an appearance of multi-gland disease, which may lower accuracy of preoperative localization with sestamibi.

Objective

To examine the relationship between vitamin D deficiency and correct parathyroid tissue localization by four-pole thyroid quadrant analysis.

Design

Retrospective study.

Setting

Referral center.

Participants

A total of 138 patients were divided into three groups according to the level of 25OHD; <20 ng/mL (vitamin D deficient), ≥20 to <30 ng/mL (vitamin D insufficient) and ≥30 ng/mL (vitamin D replete).

Main outcomes

Quadrant localization using 99mTc-sestamibi/SPECT.

Results

Among those with single-gland disease, the proportion of patients with correct quadrant localization were 60.0, 68.3 and 63.5% (p = 0.778), and the accuracy of sestamibi was 89.3, 90.6 and 89.9% for the deficient, insufficiency and replete groups, respectively. Among those with multi-gland disease, the proportion of patients with correct quadrant localization were 50.0, 25.0 and 18.2% (p = 0.619) while the accuracy was 50.0, 50.0 and 45.5%, respectively. Multi-gland disease did not occur more frequently in any of the three groups (p = 0.296).

Conclusions

Vitamin D levels do not affect the accuracy of preoperative localization with sestamibi.
Literature
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Metadata
Title
Pre-operative localization of abnormal parathyroid tissue by 99mTc-sestamibi in primary hyperparathyroidism using four-quadrant site analysis: an evaluation of the predictive value of vitamin D deficiency
Authors
Yu-Kwang Donovan Tay
Randy Yeh
Jennifer H. Kuo
Catherine McManus
James A. Lee
John P. Bilezikian
Publication date
01-04-2018
Publisher
Springer US
Published in
Endocrine / Issue 1/2018
Print ISSN: 1355-008X
Electronic ISSN: 1559-0100
DOI
https://doi.org/10.1007/s12020-018-1528-1

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