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Horm Metab Res 2016; 48(10): 673-676
DOI: 10.1055/s-0042-115645
Endocrine Care
© Georg Thieme Verlag KG Stuttgart · New York

Screening for Hyperparathyroidism by Measurement of Calcium in Patients Undergoing Thyroid Surgery: A Prospective Study

P. W. Rosário
1   Postgraduate Program, Santa Casa de Belo Horizonte, Minas Gerais, Brazil and Endocrinology Service, Santa Casa de Belo Horizonte, Minas Gerais, Brazil
,
G. F. Mourão
1   Postgraduate Program, Santa Casa de Belo Horizonte, Minas Gerais, Brazil and Endocrinology Service, Santa Casa de Belo Horizonte, Minas Gerais, Brazil
,
M. R. Calsolari
1   Postgraduate Program, Santa Casa de Belo Horizonte, Minas Gerais, Brazil and Endocrinology Service, Santa Casa de Belo Horizonte, Minas Gerais, Brazil
› Author Affiliations
Further Information

Publication History

received 04 November 2015

accepted 08 August 2016

Publication Date:
02 September 2016 (online)

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Abstract

This study screened for asymptomatic primary hyperparathyroidism (PHPT) by measuring calcium (Ca) before thyroid surgery. The study was prospective. A total of 676 patients without a suspicion of PHPT were studied. PHPT was defined as elevated Ca (in 2 measurements) in the presence of PTH>25 pg/ml and in the absence of hypocalciuria. PHPT was diagnosed in 5 patients (0.74%), all of them women. One of the 5 patients with PHPT had no indication for parathyroidectomy (PTx) according to current guidelines. Parathyroid adenoma was easily identified during perioperative assessment of thyroid surgery in 3 patients. In the other 2 patients (0.3%), localization of the adenoma required specific exploration, which was only performed because of the preoperative diagnosis of PHPT. Normalization of Ca and PTH was achieved in all 5 patients. In conclusion, in patients without a clinical or ultrasonographic suspicion of PHPT, approximately 300 individuals should be screened before thyroid surgery to avoid one reoperation (PTx) due to PHPT, which does not seem to be cost-effective.

Key words

calcium - primary hyperparathyroidism - thyroidectomy
 

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