Related Experiment Video
Updated: Jun 24, 2026

An Orthotopic Mouse Model of Anaplastic Thyroid Carcinoma
Published on: April 17, 2013
F-18 FDG-avid intrathyroidal parathyroid adenoma mimicking follicular neoplasm
Mee Kyoung Kim1, Guil Sun Kim, Su Yoen Kim
1Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea.
Abstract:
A 64-year-old woman was biochemically diagnosed with hyperparathyroidism. Technetium-99m sestamibi parathyroid scan demonstrated persistent uptake in the left lower pole of the thyroid. She underwent F-18 FDG PET due to unrelated causes. Incidentally, we found focal FDG accumulation in the lower portion of left thyroid lobe. An ultrasound showed a 2.2-cm nodule containing cystic component in the left lower pole of the thyroid. The intact PTH level in the cystic fluid was much higher than the serum intact PTH level, suggesting an intrathyroidal parathyroid adenoma. Left lobectomy revealed an intrathyroidal parathyroid adenoma in the left thyroid lobe.
Related Concept Videos
The Thyroid Gland
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...
Hyperthyroidism II: Pathophysiology
The Parathyroid Glands
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by producing...
Hyperthyroidism I: Introduction
Graves Disease II: Pathophysiology
Goiter

