Thyroid function will show thyrotoxicosis, and high levels of antithyroid-stimulating hormone receptor (TSH-R) antibodies will help confirm the diagnosis.A thyroid ultrasound will show diffuse enlargement of the thyroid gland, as well as increased vascularity.Thyroid scintigraphy will show a diffuse increase in the uptake of radioactive iodine (1). This evidence concerns the gene TSHR and thyrotoxicosis.