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KMID : 1103720170760020126
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Journal of the Korean Society of Radiology
2017 Volume.76 No. 2 p.126 ~ p.137
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Benign Thyroid and Neck Lesions Mimicking Malignancy with False Positive Findings on Positron Emission Tomography-Computed Tomography
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Yoon Ye-Ri
Kim Shin-Young
Lee Sang-Mi
Lee Deuk-Young
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Abstract
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The increasing use of positron emission tomography-computed tomography (PET/CT) has led to the frequent detection of incidental thyroid and neck lesions with increased 18F-deoxyglucose (FDG) uptake. Although lesions with increased FDG uptake are commonly assumed to be malignant, benign lesions may also exhibit increased uptake. The purpose of this pictorial essay is to demonstrate that benign thyroid and neck lesions can produce false-positive findings on PET/CT, and to identify various difficulties in interpretation. It is crucial to be aware that differentiating between benign and malignant lesions is difficult in a considerable proportion of cases, when relying only on PET/CT findings. Correlation of PET/CT findings with additional imaging modalities is essential to avoid misdiagnosis.
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KEYWORD
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Positron Emission Tomography, Thyroid Neoplasms, Neck
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