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Thyroid cancer is a rare pathology in childhood and adolescence, being responsible for 1.5-3% of all carcinomas in this age group. Differentiated thyroid carcinoma is the most commonly found variant, especially papillary carcinoma of the thyroid (PCT). Currently available data support the hypothesis that growth hormone (GH) as well as insulin-like growth factor 1 (IGF-1) can facilitate carcinogenesis. There is a confirmed role of the GH/IGF-1 axis in cancer progression as an initiator of tumorigenesis and neoplastic transformation, metastasis, and resistance to chemotherapy and radiotherapy. Presently, application of recombinant GH is an acceptable method to treat female patients with growth failure during the course of Turner syndrome (TS). This article reports the case of a fourteen-year-old female patient with Turner syndrome, Hashimoto thyroiditis, and papillary thyroid carcinoma diagnosed during GH treatment. The immunochemical analysis of tumour tissue in our patient revealed intensive brown reaction that labelled expression of the IGF-1R vs. traced reaction or its lack in normal thyroid tissue. A significant role is played by IGF-1 in the pathogenesis of invasion of thyroid cancer; however, this effect is complex, and how it works is not well established.

Papillary thyroid carcinoma in a patient with Turner syndrome treated with human growth hormone