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Doctor insights on: Becoming Hyperthyroid With Tsh Suppression After Cancer

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Dr. Barry Rosen
4,342 doctors shared insights

Cancer (Definition)

Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more


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Mom had thyroid cancer. Dr just lowered dose of thyroid meds after 20 years of same dose. Risk of cancer returning somewhere else in body? No thyroid.

Mom had thyroid cancer. Dr just lowered dose of thyroid meds after 20 years of same dose. Risk of cancer returning somewhere else in body? No thyroid.

Thyroid cancer: The dose of levothyroxine used after thyroid cancer treatment is higher than in a typical hypothyroid patient to suppress the TSH (which can stimulate cancer cells). But this high-ish dose can produce hyperthyroidism which can put an elderly person at risk of AFib and other heart problems. If cancer has not reoccurred after 20 yr, this is probably a safe move. ...Read more

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Tsh .01 post partum thyroiditis, extremely symptomatic. Is this tsh extremely low? Endo wants to test for adrenal issues as well

Tsh .01 post partum thyroiditis, extremely symptomatic. Is this tsh extremely low? Endo wants to test for adrenal issues as well

Yes: Yes this is low but goes along with thyroiditis. Proceed with workup as instructed by your endocrinologist. The diagnosis needs to be made properly. Good luck. If it's thyroiditis, it will improve. Good luck. ...Read more

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When will i stop gaining weight after thyroid ablation for graves' disease. Thyroid labs at good levels on synthroid (thyroxine)?

When will i stop gaining weight after thyroid ablation for graves' disease. Thyroid labs at good levels on synthroid (thyroxine)?

Possible!: Grave's is an autoimmune disease when thyroid antibodies bind to thyroid stimulating receptors. Overporduction of thyroid, which also increase your metabolic rate, burning more calories than normal. If your thyroid levesl are now kept normal, you may probably gain weight if your appetite is the same as when you had untreated grave's disease. ...Read more

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Does hashimoto's thyroiditis increase your risk for thyroid cancer?

Does hashimoto's thyroiditis increase your risk for thyroid cancer?

A little: Is an association between hashimotos and thyroid lymphoma. If you had thyroidectomy, for other reasons, you don't need to worry about developing that. If not, intermittent neck ultrasounds can be a useful screening test. ...Read more

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Is it possible recurrence of thyroid cancer if thyroglobulin came back positive but antibodies are decreasing? Had full thyroidectomy 2 years ago.

Is it possible recurrence of thyroid cancer if thyroglobulin came back positive but antibodies are decreasing? Had full thyroidectomy 2 years ago.

Recurrence: Rest assured. It is impossible to say you are cancer free, but that is likely. Here's why: the thyroglobulin level is unreliable because you have antibodies. The fact that the antibodies are decreasing can mean that thyroglobulin is decreasing. Antibodies can be a tumor marker surrogate. Continue to follow the antibody trend and get periodic neck ultrasounds. ...Read more

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Is the risk of thyroid carcinoma increased with diagnosis of hashimoto thyroiditis when multiple thyroid adenomas are present. Tyab 2470?

Is the risk of thyroid carcinoma increased with diagnosis of hashimoto thyroiditis when multiple thyroid adenomas are present. Tyab 2470?

Not if they function: If the adenomas are "cold" or do not function, then they are likely to be malignant. They do not show up on radionuclide scan because they do not function. Otherwise they are unlikely to be malignant. However, since you have many of them, you likely need and should get further workup, like aspiration biopsy, etc., along with treatment for your hashimoto's. ...Read more

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Can an underactive thyriod become overactive after being burnt out with radioactive iodine 12 years earlier?

Can an underactive thyriod become overactive after being burnt out with radioactive iodine 12 years earlier?

Yes, but uncommon: Some patients with graves' disease, and others with overactive thyroid nodules will undergo radioactive i-131 therapy to control thyroid levels. Usually, the thyroid hormone levels go low as the near-entire thyroid gland is destroyed. In a minority of cases, the underlying autoimmune stimulation of graves' will cause a small remnant to slowly grow back, and eventually cause overactivity again. ...Read more

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Is TSH and tg level indicate to recurrence thyroid cancer or tgab level? After 6 month after tt TSH is .04 and tg .2 but there is tgab should worry?

Is TSH and tg level indicate to recurrence thyroid cancer or tgab level? After 6 month after tt  TSH is .04 and tg .2 but there is tgab should worry?

No Worry: The tg level follows the thyroid cancer but is unreliable if the tgab is elevated. The tgab is only relevant if it is elevated. The TSH is used to follow your thyroid hormone levels and 0.04 is an appropriate level. ...Read more

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Is TSH and tg level indicate to recurrence thyroid cancer or tgab level? After 6 month after tt TSH is .04 and tg .2 but there is tgab should worry?

Is TSH and tg level indicate to recurrence thyroid cancer or tgab level? After 6 month after tt TSH is .04 and tg .2 but there is tgab should worry?

TgAb: It depends upon what the tgab level is. If the tgab levels are less than 22 iu/ml or 4 iu/ml depending upon which assay your laboratory uses, then there is no concern. If the tgab levels are elevated, the tg (thyroglobulin) test results are unreliable and your doctor may order other tests such as neck ultrasound or nuclear total body iodine scans. The TSH level is where it should be. ...Read more

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T4-dialyzed equilibrium 3.1(0.8-2.7);TSH 5.4(0.27-4.2);slight elevation but concerned about Synthroid (thyroxine) with hyper SX; odds it's a tumor? IGF-1 elevated

T4-dialyzed equilibrium 3.1(0.8-2.7);TSH 5.4(0.27-4.2);slight elevation but concerned about Synthroid (thyroxine) with hyper SX; odds it's a tumor? IGF-1 elevated

You're getting: overly concerned about lab that means nothing. Your Synthroid (thyroxine) dose needs to be increased slightly until your tsp is normalized. Forget the other stuff. You don't have a tumor, just common ordinary hypothyroidism that's partially treated. Check w/your doctor. ...Read more

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Having TPO antibody 17 and Thyroglobulin <20 confirms Hashimoto's or not? I had TSH 4.67 which reduced to 2.61 in 18 days after taking Levothyroxine.

Having TPO antibody 17 and Thyroglobulin <20  confirms Hashimoto's or not? I had TSH 4.67 which reduced to 2.61 in 18 days after taking Levothyroxine.

Depends on TPO assay: Hi. It depends on the normal range for TPO antibodies in that assay. Your thyroglobulin antibodies are undetectable, and that's normal. So without know the normal range, I can't say. If your TSH fell from 4.67 to 2.61 in 18 days, it will be lower still by the time that l-thyroxine dose reaches steady state in your body after 5-7 weeks of therapy. ...Read more

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Post Thyrodectomy (Hurthle cancer) TSH 16.89 (T3 250, T4 0.92). Dr increased Synthroid (thyroxine) 150 to 200 Is it enough? risk of cancer if not more aggressive?

Post Thyrodectomy (Hurthle cancer) TSH 16.89 (T3 250, T4 0.92). Dr increased Synthroid (thyroxine) 150 to 200 Is it enough? risk of cancer if not more aggressive?

Gradual adjustment: It is prudent to gradually adjust the dose of synthyroid so as to not cause hyperthyroid state. It would be prudent to follow your doctor's advice. ...Read more

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How could past chemo and radiotherapy relate 20 years later with very high TSH level production?

How could past chemo and radiotherapy relate 20 years later with very high TSH level production?

You are hypothyroid.: Which may or may not be related to the previous therapy. Was the radiation to your neck? ...Read more

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Is it necessary to treat mild subclinical hyperthyroid (negative antibody, normal t3/t4 TSH 0.461) before having a lobectomy for follicular nodule?

Is it necessary to treat mild subclinical hyperthyroid (negative antibody, normal t3/t4 TSH 0.461) before having a  lobectomy for follicular nodule?

Normal: A TSH of 0.46 is normal is most labs. It appears that you are going to surgery for a "follicular nodule". You should be aware that there is a newer pathology test(afirma by veracyte) that helps to differentiate which patients with follicular neoplasms need to go to surgery vs observation. You might want to consider this before surgery. ...Read more

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3 months of dex & cyclo for myeloma. Severe thyroid prob TSH high T4 low. hypocalcemic also. No change in dose. Are the 2 related? Thyroidectomy 2013

3 months of dex & cyclo for myeloma. Severe thyroid prob TSH high T4  low. hypocalcemic also. No change in dose. Are the 2 related? Thyroidectomy 2013

Your low: thyroid levels are much more likely due to your prior thyroid surgery. Check w/your doctor and begin BRAND NAME T4 replacement up to a level that normalizes your lab values. ...Read more

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My TSH levels after 25mcg Synthroid (thyroxine) treatment are lowered from 4.67 to 2.61 in 18 days.TPO antibodies are 17. Is it safe to conceive now?

My TSH levels after 25mcg Synthroid (thyroxine) treatment are lowered from 4.67 to 2.61 in 18 days.TPO antibodies are 17. Is it safe to conceive now?

Hypothyroidism/preg: Usually with untreated hypothyroidism, it will be difficult to conceive. With high TPO antibodies, there is a higher risk of spontaneous abortion and preterm births. Knowing that, it is fine to try conceive now. As per 2013, treatment of TPO antibodies with IVIG or selenium is not recommended. http://www.hindawi.com/journals/jtr/2013/542692/tab2/ ...Read more

Dr. Susan Wingo
525 doctors shared insights

Overactive Thyroid (Definition)

Hyperthyroidism, often called "overactive thyroid," is a condition where the thyroid secretes too much of the thyroid hormones. Common symptoms include heat intolerance, increased appetite, ...Read more


Dr. Quang Nguyen
936 doctors shared insights

Thyroid Stimulating Hormone (Definition)

A TSH test measures the amount of thyroid stimulating hormone (TSH) in your blood. TSH is produced by the pituitary gland and tells the thyroid gland to make and release the hormones thyroxine ...Read more