F-18 FDG-avid intrathyroidal parathyroid adenoma mimicking follicular neoplasm.
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.
Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea.
Mee Kyoung
MK
Kim
Guil Sun
GS
Kim
Su Yoen
SY
Kim
Ki Hyun
KH
Baek
Moo Ii
MI
Kang
Kwang Woo
KW
Lee
Hyung Sun
HS
Sohn
Woo Chan
WC
Park
Ki-Ho
KH
Song
D000236:Adenoma / Q000000981:diagnostic imaging* / Q000378:metabolism / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D019788:Fluorodeoxyglucose F18 / Q000378:metabolism; D006801:Humans; D006961:Hyperparathyroidism / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology; D008875:Middle Aged; D049268:Positron-Emission Tomography; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging* / Q000378:metabolism / Q000473:pathology
D019788:Fluorodeoxyglucose F18