TSHR and autoimmune disease: Whether the mediastinal thyroid tissue found in our patient corresponds to truly ectopic tissue with no attachment to the orthotopic thyroid gland, or represents thyroid tissue not removed in the previous surgery that increased in size under stimulation of the anti-TSH receptors antibodies with the onset of the autoimmune disease remains unknown, but the presence of cervical vascularization argues in favor of the latter [6].