Related Experiment Video
Updated: May 17, 2026

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
Published on: January 22, 2018
Thyroid carcinoma uptake of 18F-fluorodeoxyglucose in patients with elevated serum thyroglobulin and negative 131I
Kimberly M Creach1, Brian Nussenbaum, Barry A Siegel
1Department of Radiation Oncology, Washington University School of Medicine, Mailstop #90-38-635, St. Louis, MO 63110, USA. kcreach@radonc.wustl.edu
Purpose:
To determine if FDG-PET results can predict for outcome in thyroid cancer patients with elevated Tg and negative I-131 imaging.
Materials And Methods:
We conducted a retrospective review of 76 patients who had elevated serum Tg and negative (131)I scintigraphy and who underwent FDG-PET. After FDG-PET, patients underwent neck dissection or radiation.
Results:
The 51 patients with positive FDG-PET had a 5-year survival of 63% compared to 100% (p<0.049) for the 25 patients with negative PET. Patients with FDG-avid disease isolated to the lymph nodes had 5-year CSS of 91% compared to 32% (p=0.0033) for those with disease outside the regional lymph nodes. Twenty-nine patients with disease isolated to the regional lymph nodes underwent salvage neck dissection and 22 remain NED after 28 months.
Conclusions:
Negative FDG-PET with elevated Tg predicts an excellent outcome. FDG-avid disease isolated to the regional lymph nodes had a low likelihood of death due to thyroid cancer.
More Related Videos
Related Concept Videos
Imaging Studies II: Positron Emission Tomography and Scintigraphy
Fundamental Principles of PET
Goiter
Hyperthyroidism I: Introduction
Hyperthyroidism II: Pathophysiology
Synthesis and Regulation of Thyroid Hormones
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The iodine is then...
Graves Disease II: Pathophysiology

![Dynamic Imaging of Chimeric Antigen Receptor T Cells with [18F]Tetrafluoroborate Positron Emission Tomography/Computed Tomography](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F62334.jpg&w=3840&q=50)