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A. Transverse ultrasonography scan shows enlarged thyroid gland. B. Tc-99m scintigraphy shows enlarged thyroid gland with increased uptake (20%; normal range, 2-4%). Thyroid stimulating hormone level at time of initial study was > 60 µU/mL, and free thyroxine level was 0.12 ng/dL (normal range, 0.89-1.7 ng/dL).
