title: Incidental Follicular Thyroid Carcinoma Detected on F-18 FDG PET CT Imaging for Breast Cancer Staging: A Case Report.
abstract: The detection rate of thyroid incidentalomas is increasing; in fact, as many as 2.3% of patients undergoing FDG PET-CT for other indications have been found to have thyroid incidentalomas. The risk of malignancy in these thyroid incidentalomas can be as high as 47%. The increased uptake and the focal uptake pattern of F-18 fluorodeoxyglucose (FDG) in the thyroid during positron emission tomography (PET)-computed tomography (CT), and the calcification of the thyroid incidentaloma, are associated with even higher risk of malignancy. We report a case of a lady undergoing FDG PET-CT for breast cancer staging but noted to have a calcified thyroid incidentaloma, which was proven to be follicular thyroid carcinoma.
authors.affiliation: Department of Nuclear Medicine, Penang Hospital, Jalan Residensi, 10990, Georgetown, Pulau Pinang, Malaysia.
authors.forename: Alex Khoo
authors.initials: AK
authors.lastname: Cheen Hoe
authors.affiliation: Department of Nuclear Medicine, Penang Hospital, Jalan Residensi, 10990, Georgetown, Pulau Pinang, Malaysia.
authors.forename: Fadzilah
authors.initials: F
authors.lastname: Hamzah
authors.affiliation: Department of Nuclear Medicine, Penang Hospital, Jalan Residensi, 10990, Georgetown, Pulau Pinang, Malaysia.
authors.forename: Mohamed Ali
authors.initials: MA
authors.lastname: Abdul Khader
keywords: FDG; PET-CT; incidentaloma; thyroid carcinoma; thyroid nodules