The patients with a benign thyroid condition were diagnosed with Graves’ disease (n = 12; 25.0%), benign thyroid nodule(s) (n = 16; 33.3%), Hashimoto’s disease (n = 1; 2.1%), piriform sinus fistula (n = 2; 4.2%), goiter due to Pendred syndrome (n = 1; 2.1%), goiter due to a congenital activating TSH receptor mutation (n = 1; 2.1%) and multiple endocrine neoplasia type 2A without thyroid carcinoma (prophylactic thyroidectomy) (n = 3; 6.3%). Here, TSHR is linked to Pendred syndrome.