ARTICLE TITLE: Incidental findings of the thyroid gland on PET-CT.
AUTHORS: Suchilova M.M.1, Korkunova O. A.1, Nikolaev A. E.2, Grishkov S.M.2., Bosin V.Yu.2.
- FSBEI FPE RMACPE MOH, Russia
- Research and Practical Clinical Center of Diagnostics and Telemedicine Technologies, Department of Health Care of Moscow, Russia
Incidental findings of the thyroid gland are common on the whole-body FDG (18F- flurodeoxyglucose) positron emission tomography-computed tomography (PET-CT).
Materials and Methods:
A retrospective review of 100 patients with breast cancer (AJCC IV) was done. PET-CT studies with incidental focal and diffuse FDG thyroid uptake formed the review basis. These studies were performed within a period of 12 months (January 1, 2016-December 31, 2016). Twenty two (n=22) patients out of 100 (22%) had FDG thyroid uptake and comprised the study group. We excluded patients who had a history of previous thyroid malignancy or predisposing causes (e.g., Cowden syndrome).
Scans were acquired approximately 60 min after the injection of 555MBq (15mCi) FDG with the Gemini TF PET/CT (Philips Medical Systems, Cleveland, Ohio, USA) scanner with a 16-slice Brilliance CT.
This study shows that thyroid FDG uptake, incidentally identified on PET/CT of patients with breast cancer (AJCC - IV), occurred at a frequency of 22%. Focal and diffuse types of uptake were diagnosed with equal frequency.
However, well-defined criteria for evaluating thyroid incidentalomas on PET examinations aren’t developed yet and ultrasound still remains the method of choice for analyzing thyroid changes
KEYWORDS: incidentaloma, PET-CT, thyroid gland, FDG-uptake, petoma CORRESPONDING AUTHOR: Suchilova M.M.
FOR CITATIONS: Suchilova M. M.1. Korkunova O. A.1. Nikolayev A.E.2. Grishkov S.M.2. Bosin V.Yu.2. - Incidental findings of the thyroid gland on PET-CT // Radiology Study. - 2019. - T1., No1. - p.7-15
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