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  • Title: Morbidity Associated with Concomitant Thyroid Surgery in Patients with Primary Hyperparathyroidism.
    Author: Riss P, Kammer M, Selberherr A, Scheuba C, Niederle B.
    Journal: Ann Surg Oncol; 2015 Aug; 22(8):2707-13. PubMed ID: 25480411.
    Abstract:
    BACKGROUND: Recurrent laryngeal nerve (RLN) palsy and hypoparathyroidism are serious complications in thyroid and parathyroid surgery. The extent to which incidentally detected thyroid nodules should be treated concomitantly is a matter of debate. METHODS: This analysis was based on 1,065 patients who underwent consecutive surgery for primary hyperparathyroidism at a single institution. Together with the surgical strategy, histologic and follow-up examinations were documented prospectively and analyzed retrospectively regarding the occurrence and course of RLN palsy, hypoparathyroidism, and thyroid carcinoma. RESULTS: Altogether, RLN palsy occurred for 38 patients (3.6 %) and proved to be permanent for 1 patient (0.1 %). Postoperative calcium substitution was necessary for 191 patients (17.9 %), with 3 patients showing permanent hypoparathyroidism (0.3 %). Procedures other than open minimally invasive exploration were accompanied by a significantly increased risk for temporary RLN paresis (odds ratio [OR], 6.136) and temporary hypoparathyroidism (OR 3.306). Concomitant thyroid surgery was performed for 502 patients (47.1 %). Compared with open minimally invasive parathyroid exploration, patients undergoing unilateral exploration and hemithyroidectomy (OR 5.827) or bilateral neck exploration (BNE) and thyroidectomy (OR 8.047) had a significantly increased risk for RLN paresis. Patients administered BNE with hemithyroidectomy (OR 2.380) or thyroidectomy (OR 7.233) had a significantly increased risk for hypoparathyroidism. Thyroid malignancy was incidentally detected in 86 patients (8.1 %). CONCLUSION: Patients undergoing concomitant thyroid procedures have a significantly higher risk for temporary RLN palsy and hypoparathyroidism. However, the high rate of incidentally detected thyroid carcinoma in an iodine-replete endemic goiter area indicates hemithyroidectomy in the presence of thyroid nodules incidentally identified in preoperative ultrasounds.
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