The truth about double adenomas: Incidence, localization, and intraoperative parathyroid hormone

Lucia De Gregorio, Carrie C. Lubitz, Richard A. Hodin, Randall D. Gaz, Sareh Parangi, Roy Phitayakorn, Antonia E. Stephen

Research output: Contribution to journalArticle

6 Scopus citations


Background Double adenoma is reported in 3% to 12% of patients with primary hyperparathyroidism. The aim of this study was to determine the true incidence of double adenoma and analyze the use of localization studies and intraoperative parathyroid hormone (IOTPH) assay in these cases. Study Design We conducted a retrospective review of a series of consecutive parathyroid surgical operations from 2010 to 2013. According to the surgical findings, the series was divided into single-gland disease (SGD), double-gland disease (DGD), and multi-gland disease (MGD, more than 2 glands). The sensitivity of ultrasound, technetium 99m-sestamibi, and 4-dimensional CT to correctly lateralize each gland in the DGD group was calculated. Results of the IOPTH assay and how they impacted the extent of surgery were analyzed. Results Three hundred and forty-seven patients had SGD (69%), 68 patients had DGD (13.5%), and 86 had MGD (17%). In the DGD group, sensitivity of ultrasound, technetium 99m-sestamibi, and 4-dimensional CT to lateralize each adenoma was 42%, 34.5%, and 64%, respectively. Initially, 27 patients (40%) with DGD had been planned for a focal exploration. The conversion to bilateral neck exploration was due to the IOPTH assay in 18 cases (two-thirds of the initially planned focal explorations). At 6-month follow-up, all DGD patients were normocalcemic. Conclusions Localization studies in DGD can be misleading by reporting SGD. Four-dimensional CT seems to have the highest sensitivity. In focal explorations, the excision of all hyperfunctioning parathyroid tissue should be verified by IOPTH measurement.

Original languageEnglish (US)
Pages (from-to)1044-1052
Number of pages9
JournalJournal of the American College of Surgeons
Issue number6
Publication statusPublished - Jun 1 2016
Externally publishedYes


ASJC Scopus subject areas

  • Surgery

Cite this