Incidental parathyroidectomy during thyroid resection: incidence, risk factors, and outcome.

Ann Saudi Med

Department of Surgery, Division of General Surgery, College of Medicine, King Saud University and King Khalid University Hospital, Riyadh, Saudi Arabia.

Published: September 2011

Background And Objectives: Thyroidectomy is a commonly performed procedure for thyroid problems. Inadvertent removal of the parathyroid glands is one of its recognized complications, which occurs more frequently in certain high-risk patients. The aim of this study was to identify the incidence, risk factors, and clinical relevance of incidental parathyroidectomy during thyroid surgery.

Design And Setting: A retrospective review of thyroid operations performed at a tertiary referral hospital between January 2004 and December 2008.

Methods: Pathology reports were reviewed to identify the specimens that included parathyroid tissue and underlying thyroid pathology. Postoperative calcium levels were reviewed in these patients.

Results: During the study period, 287 thyroidectomies were performed and 47 (16.4%) patients had incidentally removed parathyroid glands. Risk factors for inadvertent parathyroid resection included total thyroidectomy (P=.0001), Hashimoto thyroiditis (P=.004), and extrathyroidal spread (P=.0003). Postoperative hypocalcemia occurred in 18 (38.3%) of the patients in whom the parathyroid gland was removed inadvertently and in 48 (20%) of the rest of the patients (P=.0123).

Conclusion: The incidence of incidental removal of parathyroid tissue during thyroidectomy is 16.4%. Total thyroidectomy, extrathyroidal extension of the tumor, and thyroiditis were found to be the risk factors. Hypocalcemia was significantly higher among patients who had inadvertent parathyroidectomy.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3119968PMC
http://dx.doi.org/10.4103/0256-4947.81545DOI Listing

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