Related Experiment Video
Updated: Oct 16, 2025
04:09
Minimal Invasive Resection of Large Retrosternal Thyroid Goiter
Published on: September 20, 2024
476
Unexpected Retrosternal Goiter Interpreted as Hyperfunctioning Metastasis on the Posttherapeutic 131I SPECT/CT
Li-Ying Hou1, Quan-Yong Luo2, Zhong-Ling Qiu2
1From the Department of Nuclear Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital.
Clinical Nuclear Medicine
|October 18, 2021
Summary
A patient with papillary thyroid cancer showed unexpected iodine-131 uptake in a cervicothoracic mass. Histological analysis revealed this hyperfunctioning mass was a retrosternal goiter, not metastasis.
Area of Science:
- Endocrinology
- Nuclear Medicine
- Oncology
Background:
- Papillary thyroid cancer management often involves radioactive iodine (131I) treatment.
- Post-thyroidectomy patients may experience hypothyroidism during thyroxine withdrawal, potentially revealing metastatic disease through stimulated thyroglobulin (Tg) levels.
Observation:
- A patient with papillary thyroid cancer presented with subclinical hypothyroidism and elevated stimulated Tg levels after 131I treatment preparation.
- Imaging revealed an unexpected area of 131I uptake in the cervicothoracic region.
Findings:
- The cervicothoracic mass demonstrated significant 131I uptake.
- Histological examination confirmed the mass to be a retrosternal goiter, not metastatic papillary thyroid cancer.
Implications:
- This case highlights the importance of considering benign conditions that can mimic hyperfunctioning metastases on radioiodine imaging.
- Diagnostic imaging modalities like SPECT/CT are crucial for precise localization and characterization of iodine-avid lesions.
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