(18)F-FDG PET/CT imaging of atypical subacute thyroiditis in thyrotoxicosis: A case report

BACKGROUND: In addition to its established role in oncologic imaging, (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) is useful for the assessment of inflammatory activity. However, subacute thyroiditis (SAT) in thyrotoxicosis is rarely detected during th...

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Detalles Bibliográficos
Autores principales: Yoshida, Katsuya, Yokoh, Hidetaka, Toriihara, Akira, Fujii, Hayahiko, Harata, Naoki, Isogai, Jun, Tateishi, Ukihide
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Wolters Kluwer Health 2017
Materias:
6800
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5627825/
https://www.ncbi.nlm.nih.gov/pubmed/28746199
http://dx.doi.org/10.1097/MD.0000000000007535
Descripción
Sumario:BACKGROUND: In addition to its established role in oncologic imaging, (18)F-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) is useful for the assessment of inflammatory activity. However, subacute thyroiditis (SAT) in thyrotoxicosis is rarely detected during these scans. CASE: A 66-year-old man with SAT in thyrotoxicosis demonstrated symptoms of transient fatigue, headache, and fever, without typical neck pain. Using (18)F-FDG PET/CT, we found increased (18)F-FDG uptake in the thyroid gland, predominantly in the right side due to SAT. We also observed a coexisting decrease in (18)F-FDG uptake in the liver and increased (18)F-FDG uptake in skeletal muscle due to thyrotoxicosis. CONCLUSION: Using (18)F-FDG PET/CT, the combined observations of increased (18)F-FDG uptake in the thyroid and skeletal muscle, and decreased (18)F-FDG uptake in the liver, even when the typical symptom of neck pain is subtle or absent, may be helpful for the differential diagnosis of SAT in thyrotoxicosis.

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