Preablation Stimulated Thyroglobulin/TSH Ratio as a Predictor of Successful I(131)Remnant Ablation in Patients with Differentiated Thyroid Cancer following Total Thyroidectomy

Authors

Syed Zubair Hussain, Aga Khan University
Maseeh Uz Zaman, Aga Khan UniversityFollow
Sarwar Malik, Aga Khan University
Nanik Ram, Aga Khan UniversityFollow
Ali Asghar, Aga Khan University
Unaib Rabbani, Aga Khan University
Nida Aftab
Najmul Islam, Aga Khan UniversityFollow

Document Type

Article

Department

Diabetes/Endocrinology and Metabolism

Abstract

Background. About 90% of thyroid cancers are differentiated thyroid cancers. Standard treatment is total thyroidectomy followed by radioactive I(131)remnant ablation and TSH suppression with thyroxine. Unsuccessful ablation drastically affects the prognosis of patients with DTC particularly high risk individuals; therefore, identifying the factors that affect the success of ablation is important in the management of patients with DTC. sTg is a good predictor of successful ablation in DTC. Its levels can be influenced by tumor staging and TSH values, as well as other factors. Therefore, we did this study using TSH to correct the predictive value of sTg in success of RRA.

Methods. We retrospectively reviewed the records of 75 patients with DTC, who underwent total thyroidectomy followed by RRA and TSH suppression.

Results. Preablation sTg and sTg/TSH ratio are significantly associated with ablation outcome. Cutoff value for sTg to predict successful and unsuccessful ablation was 18ng/mL with 76.7% sensitivity and 79.1% specificity, while for sTg/TSH cutoff was 0.35 with 81.4% sensitivity and 81.5% specificity (P < 0.001). Association was stronger for sTg/TSH ratio with adjusted odds ratio (AOR) 11.64 (2.43-55.61) than for sTg with AOR 5.42 (1.18-24.88).

Conclusions. Preablation sTg/TSH ratio can be considered as better predictor of ablation outcome than sTg, tumor size, and capsular invasion.

Comments

Last page/Issue No- not provide by Author/Publisher.

Publication (Name of Journal)

Journal of Thyroid Research

Recommended Citation

Zubair Hussain, S., Zaman, M. U., Malik, S., Ram, N., Asghar, A., Rabbani, U., Aftab, N., Islam, N. (2014). Preablation Stimulated Thyroglobulin/TSH Ratio as a Predictor of Successful I(131)Remnant Ablation in Patients with Differentiated Thyroid Cancer following Total Thyroidectomy. Journal of Thyroid Research, 2014, 610273.
Available at: https://ecommons.aku.edu/pakistan_fhs_mc_med_diabet_endocrinol_metab/53

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This work is licensed under a Creative Commons Attribution 4.0 International License.