High Pre-therapy [99mtc]pertechnetate Thyroid Uptake, Thyroid Size And Thyrostatic Drugs: Predictive Factors Of Failure In [ 131i]iodide Therapy In Graves' Disease

dc.creatorZantut-Wittmann D.E.
dc.creatorRamos C.D.
dc.creatorSantos A.O.
dc.creatorLima M.M.O.
dc.creatorPanzan A.D.
dc.creatorFacuri F.O.
dc.creatorEtchebehere E.C.S.C.
dc.creatorLima M.C.L.
dc.creatorTambascia M.A.
dc.creatorCamargo E.E.
dc.date2005
dc.date2015-06-26T14:06:59Z
dc.date2015-11-26T15:41:15Z
dc.date2015-06-26T14:06:59Z
dc.date2015-11-26T15:41:15Z
dc.date.accessioned2018-03-28T22:49:45Z
dc.date.available2018-03-28T22:49:45Z
dc.identifier
dc.identifierNuclear Medicine Communications. , v. 26, n. 11, p. 957 - 963, 2005.
dc.identifier1433636
dc.identifier10.1097/01.mnm.0000183795.59097.42
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-27344437672&partnerID=40&md5=7bd5cd375d33f80bd551f42ed8ee4d4b
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/93261
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/93261
dc.identifier2-s2.0-27344437672
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1264574
dc.descriptionBackground and objective: Several factors may interfere with the success rate of radioiodine therapy (RIT) in Graves' disease. Our aim was to evaluate, retrospectively, some of these factors in the outcome of RIT. Methods: Patient gender, age at diagnosis, ophthalmopathy, disease duration, thyroid size, drug used as clinical treatment, thionamide withdrawal period during RIT preparation, FT4, TSH and [99mTc]pertechnetate thyroid uptake prior to RIT were studied as potential interference factors for RIT success. Eighty-two Graves' disease patients were submitted to RIT after thionamide treatment failure. Prior to RIT, 67 patients were receiving methimazole and 15 propylthiouracil. Thirty-three patients received thionamides during RIT; in 49 patients the medication was withdrawn for 2-30 days. [99mTc] pertechnetate thyroid uptake was determined before RIT. Fixed doses of 370 MBq of [131I]iodide were administered to all patients. Results: Eleven patients became euthyroid; 40 became hypothyroid and 31 remained hyperthyroid. There was no association between outcome and age at diagnosis, gender, ophthalmopathy, pre-RIT FT4, TSH, antithyroid antibodies or thyrostatic drug. Multiple logistic regression showed higher probability of treatment success in patients with thyroid mass <53g (odds ratio (OR) = 8.9), with pre-RIT thyroid uptake <12.5% (OR = 4.1) and in patients who withdrew thionamide before RIT (OR = 4.9). Conclusions: Fixed doses of 370 MBq of radioiodine seem to be practical and effective for treating Graves' disease patients with [99mTc]pertechnetate uptake < 12.5% and thyroid mass < 53g. This treatment is clearly not recommended for patients with large goitre. In contrast to what could be expected, patients with a high pre-RIT thyroid uptake presented a higher rate of RIT failure. © 2005 Lippincott Williams & Wilkins.
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dc.description957
dc.description963
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dc.languageen
dc.publisher
dc.relationNuclear Medicine Communications
dc.rightsfechado
dc.sourceScopus
dc.titleHigh Pre-therapy [99mtc]pertechnetate Thyroid Uptake, Thyroid Size And Thyrostatic Drugs: Predictive Factors Of Failure In [ 131i]iodide Therapy In Graves' Disease
dc.typeArtículos de revistas


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