Thyroid Cancer / Nodules & Hyperthyroidism Expert Forum
High TSH/ Thyroid cancer
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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.

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High TSH/ Thyroid cancer

I am a 10+ yr survivor of Stage II papillary thyroid cancer.  I had a near total thyroidectomy followed by ablation.  Have always taken synthroid for suppression of TSH and my TSH level has always been undetectable.  This week  my TSH came back at 2.45.  I know my synthroid must be too low but does this mean there is a possiblity that the cancer has returned?  I can't see my dr for a week; they sent my lab results to my home address.  Any information would be appreciated.

Thanks.
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No - this means the synthroid dose or the absorption of it is not optimal.  Thyroglobulin blood tests and neck ultrasound are the mainstays for determining whether the cancer is present.  A higher TSH may increase the risk of cancer return, but a high TSH is not a sign of cancer return.
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Mark Lupo, M.D.Blank
Thyroid & Endocrine Center of Florida
Sarasota, FL
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