Abstract
Introduction The occurrence of second primary thyroid malignancy should be noticed in survivors of brain germinoma treated by irradiation. Case Report A patient with a history of intracranial germinoma who underwent chemoradiotherapy was referred to our endocrine clinic due to impotency and infertility. The patient received replacement therapy due to hypopituitarism. He returned to us 11 years after brain radiation with enlargement of the thyroid gland. Thyroid ultrasonography showed enlargement with a dominant 62*37 mm solid hypoechoic nodule in the right thyroid lobe. Several lymph nodes at both sides of the neck were seen. Total thyroidectomy revealed PTC with regional metastasis. Conclusion Endocrine disruption must be considered in adult cancer survivors and the importance of long-term follow-up should be emphasized in these patients.
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