Toxic multinodular goiter laboratory findings: Difference between revisions
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{{Toxic multinodular goiter}} | {{Toxic multinodular goiter}} | ||
{{CMG}}; {{AE}} {{Mazia}} | |||
==Overview== | |||
Diagnosis of multinodular goiter is made by measurement of serum [[thyroid-stimulating hormone]] ([[TSH]]) , serum free [[T4]] test , [[total thyroxine]] (T4) and free [[triiodothyronine]] (T3). | |||
==Laboratory Findings== | |||
*Diagnosis of multinodular goiter is made by measurement of serum [[thyroid-stimulating hormone]] (TSH) , serum free [[T4]] test , total [[thyroxine]] (T4) and free [[triiodothyronine]] (T3).<ref name="pmid26462967">{{cite journal |vauthors=Haugen BR, Alexander EK, Bible KC, Doherty GM, Mandel SJ, Nikiforov YE, Pacini F, Randolph GW, Sawka AM, Schlumberger M, Schuff KG, Sherman SI, Sosa JA, Steward DL, Tuttle RM, Wartofsky L |title=2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer: The American Thyroid Association Guidelines Task Force on Thyroid Nodules and Differentiated Thyroid Cancer |journal=Thyroid |volume=26 |issue=1 |pages=1–133 |year=2016 |pmid=26462967 |pmc=4739132 |doi=10.1089/thy.2015.0020 |url=}}</ref> | |||
*Additional tests include: | |||
**Serum [[thyroglobulin]] and [[thyroid autoantibodies]] to detect [[autoimmunity]] that may co-exist with [[goiter]] and [[lung function testing]]. | |||
**Urinary [[iodine]] excretion can be measured in case of suspected [[iodine]] excess. | |||
*Laboratory findings consistent with the diagnosis of multinodular goiter include:<ref name="pmid12588812">{{cite journal |vauthors=Hegedüs L, Bonnema SJ, Bennedbaek FN |title=Management of simple nodular goiter: current status and future perspectives |journal=Endocr. Rev. |volume=24 |issue=1 |pages=102–32 |year=2003 |pmid=12588812 |doi=10.1210/er.2002-0016 |url=}}</ref> | |||
**[[TSH]] is usually normal or decreased. | |||
**Free [[T4]], and free [[T3]] is usually normal or elevated. | |||
**An isolated increase in [[T4]] is observed in: | |||
***[[Hyperthyroidism]] induced by [[iodine]] | |||
***[[Hyperthyroidism]] due to agents that reduce peripheral conversion of [[T4]] to [[triiodothyronine]] (T3) like:<ref name="pmid26462967">{{cite journal |vauthors=Haugen BR, Alexander EK, Bible KC, Doherty GM, Mandel SJ, Nikiforov YE, Pacini F, Randolph GW, Sawka AM, Schlumberger M, Schuff KG, Sherman SI, Sosa JA, Steward DL, Tuttle RM, Wartofsky L |title=2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer: The American Thyroid Association Guidelines Task Force on Thyroid Nodules and Differentiated Thyroid Cancer |journal=Thyroid |volume=26 |issue=1 |pages=1–133 |year=2016 |pmid=26462967 |pmc=4739132 |doi=10.1089/thy.2015.0020 |url=}}</ref> | |||
****[[Propranolol]] | |||
****[[Corticosteroids]] | |||
****[[Radiocontrast agents]] | |||
****[[Amiodarone]] | |||
**Serum [[thyroglobulin]] is usually elevated. | |||
**[[Thyroid autoantibodies]] ([[thyroperoxidase]] antibodies and [[thyroglobulin antibody]]) usually negative. | |||
**Some patients with multinodular goiter may have impaired inspiratory capacity on [[lung function testing]]. | |||
==References== | ==References== | ||
{{Reflist|2}} | {{Reflist|2}} | ||
{{ | {{WH}} | ||
{{ | {{WS}} | ||
Latest revision as of 16:03, 13 October 2017
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mazia Fatima, MBBS [2]
Overview
Diagnosis of multinodular goiter is made by measurement of serum thyroid-stimulating hormone (TSH) , serum free T4 test , total thyroxine (T4) and free triiodothyronine (T3).
Laboratory Findings
- Diagnosis of multinodular goiter is made by measurement of serum thyroid-stimulating hormone (TSH) , serum free T4 test , total thyroxine (T4) and free triiodothyronine (T3).[1]
- Additional tests include:
- Serum thyroglobulin and thyroid autoantibodies to detect autoimmunity that may co-exist with goiter and lung function testing.
- Urinary iodine excretion can be measured in case of suspected iodine excess.
- Laboratory findings consistent with the diagnosis of multinodular goiter include:[2]
- TSH is usually normal or decreased.
- Free T4, and free T3 is usually normal or elevated.
- An isolated increase in T4 is observed in:
- Hyperthyroidism induced by iodine
- Hyperthyroidism due to agents that reduce peripheral conversion of T4 to triiodothyronine (T3) like:[1]
- Serum thyroglobulin is usually elevated.
- Thyroid autoantibodies (thyroperoxidase antibodies and thyroglobulin antibody) usually negative.
- Some patients with multinodular goiter may have impaired inspiratory capacity on lung function testing.
References
- ↑ 1.0 1.1 Haugen BR, Alexander EK, Bible KC, Doherty GM, Mandel SJ, Nikiforov YE, Pacini F, Randolph GW, Sawka AM, Schlumberger M, Schuff KG, Sherman SI, Sosa JA, Steward DL, Tuttle RM, Wartofsky L (2016). "2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer: The American Thyroid Association Guidelines Task Force on Thyroid Nodules and Differentiated Thyroid Cancer". Thyroid. 26 (1): 1–133. doi:10.1089/thy.2015.0020. PMC 4739132. PMID 26462967.
- ↑ Hegedüs L, Bonnema SJ, Bennedbaek FN (2003). "Management of simple nodular goiter: current status and future perspectives". Endocr. Rev. 24 (1): 102–32. doi:10.1210/er.2002-0016. PMID 12588812.