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  • Title: Management of thyroid nodules incidentally discovered on MIBI scanning for primary hyperparathyroidism.
    Author: Greilsamer T, Blanchard C, Christou N, Drui D, Ansquer C, Le Bras M, Cariou B, Caillard C, Mourrain-Langlois E, Delemazure AS, Mathonnet M, Kraeber-Bodéré F, Mirallié E.
    Journal: Langenbecks Arch Surg; 2015 Apr; 400(3):313-8. PubMed ID: 25694271.
    Abstract:
    INTRODUCTION: Parathyroid sestamibi scan is routinely performed before parathyroid surgery. A large number of thyroid cancers take up 99mTc-sestamibi (MIBI). Since 2001, thyroid nodules discovered on sestamibi, nodules >2 cm, and/or with suspicious criteria were resected. The aim of this study was to evaluate the results of this policy. METHODS: All patients operated on for hyperparathyroidism, with a MIBI and cervical ultrasonography (US) with a thyroid resection for nodule, were retrospectively included. RESULTS: From 2001 to 2013, 685 patients were operated on for hyperparathyroidism. Some 137 (85 % females) had both preoperative MIBI and cervical US and a thyroid resection. The mean age was 63.2 ± 12.8 years. Sixty-three patients had a total thyroidectomy and 74 a lobectomy. Thirty-six patients had a thyroid cancer. The median size of cancers was 6.5 mm (0.3-22 mm), and 23 (16.7 %) patients had microcarcinoma. Among the 137 patients, 44 (32 %) had a MIBI+ nodule including 22 cancers. Sixty-one percent of malignant nodules were MIBI+ (22/36). The median size of MIBI+ cancers was 15 mm (9-22 mm) versus 2 mm (0.3-17 mm) for MIBI- cancers (p = 0.03). Twenty-two percent of benign nodules were MIBI+ (22/101). Finally, the sensitivity, specificity, positive predictive value, and negative predictive value of MIBI were 61, 78, 50, and 85 %, respectively. CONCLUSION: Thyroid nodules incidentally discovered on MIBI in hyperparathyroidism patients should be resected.
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