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Thyroid Cancer, Nodules & Hyperthyroidism (Expert Forum)
Secondary Cancers
Answered by
Mark Lupo, M.D. - Thyroid Nodules, Thyroid Cancer, hyperthyroidism, hypothyroidism, Thyroid Ultrasound
Thyroid & Endocrine Center of Florida
Sarasota - FL
Questions in the Thyroid forum are answered by Mark Lupo, MD. Topics covered include Goiter, Graves Disease, Hyperthyroid, Parathyroid/Calcium Problems, Thyroid Cancer, Thyroid Nodules/Cysts, Thyroiditis, Thyroid & Pregnancy, Thyroid Stimulating Hormone (TSH), Thyroid Tests, and Thyroid Surgery.
Secondary Cancers
by hawkfan, Aug 02, 2006 12:00AM
I was diagnosed with Follicular and Papillary Thyroid Cancers this past March. I have had my thyroid removed and underwent radioactive iodine treatment. What are my chances of a secondary cancer and what types? I have heard secondary cancers are common with Thyroid Cancer and have also read that Leukemia is a possible side effect of Radioactive Iodine Treatment.
Doctor's Answer
by Mark Lupo, M.D., Aug 03, 2006 12:00AM
, Aug 03, 2006 12:00AM
Secondary cancers are found at a slightly increased rate but this may be due to the fact that we are looking more closely at x-rays etc in patients who have already had one cancer. The risk overall is very low. Leukemia rate is very low until the total I-131 dose (ie, add up all the I-131 you've had -- which at this point is probably 100mCi or less) is >500 or even higher.
