A member asked:

Will radioactive iodine treatment make your thyroid smaller if it's currently enlarged?

A doctor has provided 1 answer
Dr. Harold Mandel answered

Specializes in General Practice

Yes: I-131 is given to destroy overactive thyroid tissue or to shrink thyroid glands which are functioning normally but are causing problems because of their enlarged size. Large doses of I-131 are used to destroy thyroid cancer cells . Best of luck with your health!

Answered 7/30/2018

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