Journal of Endocrinology and Metabolism, ISSN 1923-2861 print, 1923-287X online, Open Access
Article copyright, the authors; Journal compilation copyright, J Endocrinol Metab and Elmer Press Inc
Journal website https://www.jofem.org

Case Report

Volume 14, Number 2, April 2024, pages 78-84

Multiple Metastatic Lesions on a Post-Ablative Whole-Body Scan Despite a Negative Serum Thyroglobulin Level in a Patient With Papillary Thyroid Cancer

Figures

Figure 1.
Figure 1. Follow-up of post-therapeutic whole-body scan (RxWBS) during the clinical course. The first RxWBS revealed multiple radioactive iodine (RAI) uptakes at thyroid remnants and multiple lymph nodes in the anterolateral neck and functioning metastases to both lungs (left). The second RxWBS showed focal hot uptake in the head (right retro-pharyngeal node) and diffuse RAI uptake in both lungs (center). The third RxWBS showed no RAI uptake in lung lesions and focal hot uptake in the right maxilla, left parotid gland, and isthmus of the thyroid (right). RAI Tx: RAI therapy; ANT: anterior; POST: posterior.
Figure 2.
Figure 2. Follow-up of serum thyroglobulin levels during the clinical course. Negative serum thyroglobulin levels were increased after radioactive iodine (RAI) remnant ablation (first RAI Tx). Thereafter, serum thyroglobulin levels continuously decreased throughout the course. RAI Tx: RAI therapy; TSH: thyroid-stimulating hormone.