The Prognostic Role of Postablative Non-Stimulated Thyroglobulin in Differentiated Thyroid Cancer

Cancers

卷:13

Zsuzsanna Nagy¹  Orsolya Nemes²  Emese Mezosi²  Szabina Szujo²  Beata Bodis²  Laszlo Bajnok²  Karoly Rucz² 

[1] IInd Department of Medicine and Nephrological Center, Medical School, University of Pecs, 1 Pacsirta, H-7624 Pecs, Hungary;

[2] Ist Department of Medicine, Medical School, University of Pecs, 13 Ifjusag, H-7624 Pecs, Hungary;

关键词: differentiated thyroid cancer;    papillary thyroid cancer;    follicular thyroid cancer;    thyroglobulin;    prognostic factor;   

DOI  :  10.3390/cancers13020310

来源: DOAJ

【 摘 要 】

Thyroglobulin (Tg) is the most important tumor marker in differentiated thyroid cancer (DTC). The aim of this study was to assess the diagnostic and prognostic roles of postoperative stimulated and postablative lowest, highest, and one-year non-stimulated Tg values obtained during the follow-up of patients with DTC. In this retrospective study, 222 radioiodine-treated, anti-thyroglobulin antibody (TgAb)-negative DTC patients having at least 9 months’ follow-up time were included (172 papillary and 50 follicular cancers; median age: 48 (from 15 to 91) years; female–male ratio: 158/64; median (quartiles) follow-up time: 54 (22–97) months). The 2015 American Thyroid Association guidelines were applied as criteria of the therapeutic response. Postoperative stimulated Tg values had significantly lower diagnostic accuracy than any of the non-stimulated postablative Tg values. One-year non-stimulated Tg had excellent prognostic value for structural disease: a cut-off value of 0.85 ng/mL had an 88.1% diagnostic accuracy. If the Tg value did not decrease below 0.75 ng/mL at any time during follow-up, the risk of residual disease was 25 times higher. The highest non-stimulated Tg during follow-up was the best predictor of residual disease (e.g., a Tg value exceeding 7.7 ng/mL indicated a 30-fold increase in risk). Non-stimulated Tg values measured during follow-up have excellent diagnostic accuracy to predict structural disease in DTC patients. The risk classification of a patient can safely be modified based on even a single Tg measurement.

【 授权许可】

Unknown