Which is a treatment option for hyperthyroidism?
A) thymectomy
B) vanillylmandelic acid
C) radioactive sodium iodide 131 (I-131)
D) a thyroid supplement drug
C
Explanation: A) A thymectomy removes the thymus gland, not the thyroid gland.
B) This is a laboratory test, not a treatment option.
C) Correct! Radioactive sodium iodide destroys some thyroid cells to relieve the excessive secretion of thyroid hormones.
D) A thyroid supplement drug corrects hypothyroidism, not hyperthyroidism.
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