Value of follow-up diagnostic radioiodine scans in differentiated thyroid cancer

Background: The most important part of the follow-up of differentiated thyroid carcinoma (DTC) is the measurement of serum thyroglobulin (Tg). An increase of Tg levels indicates likely tumor recurrence. According to the guidelines of the European Society of Medical Oncology (ESMO), the follow-up sho...

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Main Authors: Teresa Kraus, Natalia Shengelia-de Lange, Holger Einspieler, Marcus Hacker, Alexander Haug, Elisabeth Kretschmer-Chott, Georgios Karanikas
Format: Article
Language:English
Published: Bioscientifica 2024-04-01
Series:Endocrine Connections
Subjects:
Online Access:https://ec.bioscientifica.com/view/journals/ec/13/5/EC-24-0007.xml
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author Teresa Kraus
Natalia Shengelia-de Lange
Holger Einspieler
Marcus Hacker
Alexander Haug
Elisabeth Kretschmer-Chott
Georgios Karanikas
author_facet Teresa Kraus
Natalia Shengelia-de Lange
Holger Einspieler
Marcus Hacker
Alexander Haug
Elisabeth Kretschmer-Chott
Georgios Karanikas
author_sort Teresa Kraus
collection DOAJ
description Background: The most important part of the follow-up of differentiated thyroid carcinoma (DTC) is the measurement of serum thyroglobulin (Tg). An increase of Tg levels indicates likely tumor recurrence. According to the guidelines of the European Society of Medical Oncology (ESMO), the follow-up should consist of serum Tg assays and a neck ultrasound, while the American Thyroid Association (ATA) recommends serum Tg assays, neck ultrasounds, and a diagnostic radioiodine whole-body scan (WBS) if non-stimulated Tg is greater than 10 ng/mL or if Tg is rising. This study questions the necessity of a diagnostic WBS in patients with low stimulated Tg levels during the initial follow-up. Design: This study is a retrospective data analysis. Methods: The data of 185 patients, who were in regular treatment and aftercare between 2015 and 2018 at the Department of Nuclear Medicine in Vienna, as well as the data of 185 patients who were treated in Tbilisi between 2015 and 2019, were analyzed. Results: There was a highly significant relationship between low stimulated Tg levels (<0.5 ng/mL) and the outcome of the diagnostic WBS at the first follow-up (χ2 = 14.7, P < 0.001). In total, 31 out of 370 patients (8.4%) had positive findings in the diagnostic WBS. Seventy-five of 370 patients (19.74%) had stimulated Tg levels >0.5 ng/mL. Conclusion: Our data suggest that the first follow-up, 4–12 months after the initial therapy of DTC, including the measurement of basal and stimulated Tg levels and Tg antibody levels, does not mandate a diagnostic WBS on all patients.
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spelling doaj.art-68a2298088f641c7b497396fa91d98902024-04-13T09:33:38ZengBioscientificaEndocrine Connections2049-36142024-04-0113516https://doi.org/10.1530/EC-24-0007Value of follow-up diagnostic radioiodine scans in differentiated thyroid cancerTeresa Kraus0Natalia Shengelia-de Lange1Holger Einspieler2Marcus Hacker3Alexander Haug4Elisabeth Kretschmer-Chott5Georgios Karanikas6Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, AustriaDivision of Nuclear Medicine, Tbilisi State Medical University, Tbilisi, GeorgiaDivision of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, AustriaDivision of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, AustriaDivision of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, AustriaDivision of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, AustriaDivision of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, AustriaBackground: The most important part of the follow-up of differentiated thyroid carcinoma (DTC) is the measurement of serum thyroglobulin (Tg). An increase of Tg levels indicates likely tumor recurrence. According to the guidelines of the European Society of Medical Oncology (ESMO), the follow-up should consist of serum Tg assays and a neck ultrasound, while the American Thyroid Association (ATA) recommends serum Tg assays, neck ultrasounds, and a diagnostic radioiodine whole-body scan (WBS) if non-stimulated Tg is greater than 10 ng/mL or if Tg is rising. This study questions the necessity of a diagnostic WBS in patients with low stimulated Tg levels during the initial follow-up. Design: This study is a retrospective data analysis. Methods: The data of 185 patients, who were in regular treatment and aftercare between 2015 and 2018 at the Department of Nuclear Medicine in Vienna, as well as the data of 185 patients who were treated in Tbilisi between 2015 and 2019, were analyzed. Results: There was a highly significant relationship between low stimulated Tg levels (<0.5 ng/mL) and the outcome of the diagnostic WBS at the first follow-up (χ2 = 14.7, P < 0.001). In total, 31 out of 370 patients (8.4%) had positive findings in the diagnostic WBS. Seventy-five of 370 patients (19.74%) had stimulated Tg levels >0.5 ng/mL. Conclusion: Our data suggest that the first follow-up, 4–12 months after the initial therapy of DTC, including the measurement of basal and stimulated Tg levels and Tg antibody levels, does not mandate a diagnostic WBS on all patients.https://ec.bioscientifica.com/view/journals/ec/13/5/EC-24-0007.xmlthyroid cancethyroglobulinfollow-updiagnostic radioiodine whole-body scan
spellingShingle Teresa Kraus
Natalia Shengelia-de Lange
Holger Einspieler
Marcus Hacker
Alexander Haug
Elisabeth Kretschmer-Chott
Georgios Karanikas
Value of follow-up diagnostic radioiodine scans in differentiated thyroid cancer
Endocrine Connections
thyroid cance
thyroglobulin
follow-up
diagnostic radioiodine whole-body scan
title Value of follow-up diagnostic radioiodine scans in differentiated thyroid cancer
title_full Value of follow-up diagnostic radioiodine scans in differentiated thyroid cancer
title_fullStr Value of follow-up diagnostic radioiodine scans in differentiated thyroid cancer
title_full_unstemmed Value of follow-up diagnostic radioiodine scans in differentiated thyroid cancer
title_short Value of follow-up diagnostic radioiodine scans in differentiated thyroid cancer
title_sort value of follow up diagnostic radioiodine scans in differentiated thyroid cancer
topic thyroid cance
thyroglobulin
follow-up
diagnostic radioiodine whole-body scan
url https://ec.bioscientifica.com/view/journals/ec/13/5/EC-24-0007.xml
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