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Year : 2020  |  Volume : 22  |  Issue : 2  |  Page : 78-81

Incidence and risk factors of inadvertent parathyroidectomy during thyroid surgery: A single-center retrospective study

1 Department of Otorhinolaryngology - Head and Neck Surgery, King Abdulaziz Medical City, Jeddah, Saudi Arabia
2 Department of Otorhinolaryngology - Head and Neck Surgery, King Fahad Armed Forces Hospital, Jeddah, Saudi Arabia
3 Department of Otorhinolaryngology - Head and Neck Surgery, King Abdulaziz University, Rabigh, Saudi Arabia

Correspondence Address:
Dr. Abdulaziz Rajeh Alanzi
Department of Otorhinolaryngology - - Head and Neck Surgery, King Abdulaziz Medical City, Jeddah
Saudi Arabia
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/SJOH.SJOH_17_20

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Context: Thyroidectomy is considered a relatively safe surgery with morbidity of <5% when undertaken by experienced surgeons. Inadvertent parathyroidectomy (IP) means pathology report has found parathyroid tissue in the thyroid specimen, and it was reported to range from 2.9% to 31%. Aims: The aim of this study is to measure the incidence rate and to evaluate the significant relationship between risk factors and IP during thyroid surgery. Settings and Design: A retrospective chart review study was carried out in King Fahad Armed Forces Hospital, Jeddah, between June 2015 and December 2019. Subjects and Methods: All consecutive patients undergoing unilateral or bilateral thyroidectomy were enrolled in this study. Histopathology reports were reviewed to identify the specimens that included parathyroid tissue and underlying thyroid disease, and these were compared to patients with no parathyroidectomy in terms of gender, pathological features, re-operation, Hashimoto thyroiditis, extrathyroidal extension, and central neck dissection. Statistical Analysis Used: Statistical analysis was carried out using the Statistical Package for the Social Sciences. Results: Retrospective analysis of 181 consecutive thyroidectomy cases reveals that 34 (18.7%) patients had IP. Significant risk factors for IP included extra-thyroid extension (P = 0.008), total thyroidectomy (P = 0.017), and Hashimoto thyroiditis (P = 0.021). Other risk factors, including gender, malignancy, central neck dissection, and re-operation, were not statistically significant in this study. Conclusions: IP during thyroid surgery is not uncommon (18.7%). Total thyroidectomy, hashimoto thyroiditis, and extrathyroidal extension of the tumor were found to be significant risk factors. We recommend more meticulous intra-operative identification of parathyroid glands, particularly for patients with these risk factors.

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