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Doctor insights on: Pituitary Tumor And Low Tsh

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Neoplasms (Definition)

"tumor" literally translates as "mass", so even a fresh bruise could be called a "tumor". Doctors use the term "neoplasm" (tranlates literally as new growth) to describe tumors that are abnormal growths of cells. These may be benign or malignant; "malignant" = cancer. In everyday usage, we use "tumor" ...Read more


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In hyperthyroidism, would a low TSH be caused by a pituatary tumor? If so, what would blood tests indicate?

In hyperthyroidism, would a low TSH be caused by a pituatary tumor? If so, what would blood tests indicate?

TSH: Tsh, thyroid stimulating hormone (or thyrotropin), is made by the pituitary gland in the brain and signals the thyroid to make thyroid hormone. In hyperthyroidism, thyroid hormone, made by the thyroid, circulates in the blood to the pituitary gland to lower tsh. ...Read more

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What does it mean if a patient has a pituitary tumor that secretes large amounts of tsh?

What does it mean if a patient has a pituitary tumor that secretes large amounts of tsh?

Tumor forming TSH: TSH-secreting pituitary adenomas are benign tumors of the pituitary gland. They produce too much thyroid stimulating hormone (TSH) which causes the thyroid gland to enlarge and produce thyroid hormone in excess, leading to an overactive thyroid (hyperthyroidism) .most common initial therapy for patients with a TSH-secreting pituitary adenoma is transphenoidal resection of the tumour. ...Read more

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Losing weight, speech/balance prob, body pins/need. Could this only be a pituitary tumor or something else? 129lb 51 M TSH 9.2 FSH 26.1 Prolactin 410

Losing weight, speech/balance prob, body pins/need. Could this only be a pituitary tumor or something else?
129lb 51 M 
TSH 9.2
FSH 26.1
Prolactin 410

Hyperprolactinemia: your prolactin ,TSH and FSH are elevated..High prolactin causes low FSH ..I would recommend to retest harmones..If prolactin remains elevated, you need to get an MRIof the pituitary .. ...Read more

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With low TSH 0.02 but all normal thyroid and pituitary gland tests what could,be causing the suppressed tsh? Confused please help....

With low TSH 0.02 but all normal thyroid and pituitary gland tests what could,be causing the suppressed tsh? Confused please help....

Depends: Hi. How long has your suppressed TSH been present? If more than a couple months, and your free T4 and T3 (liothyronine) are normal, it's most likely an autonomous hyper-functioning ("hot") nodule (or multiple hot nodules). ...Read more

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Could a low TSH but normal Free T4 mean a Pituitary problem? Or would that be more indicative of the start of Hypothyroidism?

Could a low TSH but normal Free T4 mean a Pituitary problem?  Or would that be more indicative of the start of Hypothyroidism?

Sounds normal: Your description is consistent with normal thyroid function, but if you are concerned, you could provide exact numbers for us to review. ...Read more

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Does low TSH mean I have a problem with my pituitary gland ? Hypopituitarism? My free T3 (liothyronine) and T4 are high normal???

Does low TSH mean I have a problem with my pituitary gland ? Hypopituitarism? My free T3 (liothyronine) and T4 are high normal???

Low TSH: May reflect Hypopituitary condition if FT4 and FT3 are low also. However if both are high that will indicate Hyperthyroidism. Discuss with your doctor about other modifers like acute illness or medication effects or pregnancy on your thyroid panel result ...Read more

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What can cause low TSH of its not a Thyroid or pituitary problem? 0.01 TSH T3 (liothyronine) and T4 free normal, graves and hasmitos negative

What can cause low TSH of its not a Thyroid or pituitary problem? 0.01 TSH T3 (liothyronine) and T4 free normal, graves and hasmitos negative

2 possibilities: Hi. First of all, Hashimoto's doesn't cause a suppressed TSH, and YES, your TSH is SUPPRESSED, not "low", because your free T4 and total T3 (liothyronine) are "normal". A low TSH (pituitary defect) would cause low free T4 and possibly/probably low T3 (liothyronine). The most likely is a "hot" thyroid nodule (autonomously hyper-functioning); second most likely would be a phase of subacute thyroiditis. Follow over time to tell. ...Read more

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Could a low TSH (.28) & normal T3 (liothyronine) & T4 levels mean a Pituitary issue? Or is that more typical of hypothyroidism? Would high Chloride (111) effect it?

Could a low TSH (.28) & normal T3 (liothyronine) & T4 levels mean a Pituitary issue? Or is that more typical of hypothyroidism? Would high Chloride (111) effect it?

Means pituitary is: A TSH of 0.28 with normal free T4 and free T3 (liothyronine) likely means the pituitary is working properly. A TSH of 0.1-0.4 is lower than the reference range, which means about 2.5% of normal people have a TSH or 0.1-0.4. Thus, one hopes she is normal. Her endocrinologist can follow and recheck her levels in 4-6 weeks to confirm that her levels are stable (TSH not dropping lower; T4 or T3 (liothyronine) not above normal). ...Read more

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Dr. Quang Nguyen
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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