• Umut Mousa, Cuneyd Anil, Canan Cicek Demir, Yusuf Bozkus, Kubra Ozturk, Bascil Tutuncu Neslihan N Department of Endocrinology and Metabolism, Baskent University Faculty of Medicine, Ankara, Turkey., and Alptekin Gursoy.
• Department of Endocrinology and Metabolism, Baskent University Faculty of Medicine, Ankara, Turkey, umutmousa@yahoo.co.uk.
• Med Princ Pract. 2019 Jan 1; 28 (5): 418-424.

ObjectiveColorectal polyps and thyroid nodules are common disorders linked to hyperinsulinemia and metabolic syndrome (Mets). The direct association between these two diseases is not clear. We aimed to analyze the prevalence of thyroid nodules in subjects with and without colorectal polyps. The secondary aim was to establish the prevalence of Mets and its parameters in both disorders and to determine if insulin resistance and hyperinsulinemia are common underlying pathophysiological mechanisms.Subjects And MethodsOne hundred and five subjects with colorectal polyps (71 males, 34 females) and 68 controls (28 males, 40 females) were enrolled. The parameters of Mets together with TSH, insulin, low-density lipoprotein cholesterol, and homeostasis model for assessment of insulin resistance levels were calculated. We performed thyroid ultrasonography in all participants.ResultsThe prevalence of Mets was similar in the colorectal polyp and control groups (37.1 vs. 37.3%, p = 0.982). The prevalence of Mets was nonsignificantly higher in subjects with a documented thyroid nodule compared to subjects without a thyroid nodule (43.0 vs. 32.6%, p = 0.205). The prevalence of thyroid nodules in subjects with colorectal polyps was significantly higher than in subjects without polyps (52.9 vs. 35.3%, p = 0.017). Compared to subjects with no colorectal polyps, we established a significant increase in the odds of having thyroid nodules (OR 2.05; 95% CI: 1.097-3.860, p = 0.017). The presence of colorectal polyps and age in the adjusted model were established to be independent risk factors for having thyroid nodules (p = 0.025 and p = 0.007, respectively).ConclusionThese results may support the presence of other common mechanisms in the development of these two pathologies other than insulin resistance and hyperinsulinemia.©2019 The Author(s) Published by S. Karger AG, Basel.

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