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| 18F-FDG PET/CT and Sonographic Findings of Thyroid |
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| Jae A Lee, MD Gong Yong Jin, MD, Seung-Bae Hwang, MD, Gyong-Ho Chung, MD, Sang Yong Lee, MD |
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| 1Department of Radiology, Chonbuk National University Hospital, Jeonju, Korea |
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| Purpose: To compare characteristic findings of 18F-FDG PET/CT with ultrasonography
of malignant thyroid incidentaloma.
Materials and Methods: This study enrolled 74 patients receiving ultrasonography
after thyroid incidentaloma detected on 18F-FDG PET/CT. We analyzed the size,
attenuation, margin, cervical lymphadenopathy, and P-SUV of thyroid incidentaloma
in 18F-FDG PET/CT and analyzed the size, internal contents, appearance, border,
echo, and calcification patterns of thyroid incidentaloma in ultrasonography. Based on
pathologic findings, we investigated findings of 18F-FDG PET/CT and ultrasonography
for malignant thyroid incidentaloma.
Results: In 18F-FDG PET/CT findings, an ill-defined margin accompanied by cervical
lymphadenopathy was more common in malignant (59.1%) than benign (13.2%)
lesions (p < 0.05). There were no significant differences in p-SUV between malignant
and benign thyroid incidentalomas (4.8±18.3 vs. 4.4±2.2). In ultrasonographic findings,
being taller than wide (1.9% vs. 36.4%), having a well-defined speculated margin
(75.5% vs. 22.7%), having marked hypoechoic images (18.9% vs. 31.8%), and having
micro (5.7% vs. 22.7%) or macrocalcifications (3.8% vs. 27.3%) were more common
in malignant thyroid incidentalomas (p < 0.05).
Conclusion: Malignant thyroid incidentalomas in 18F-FDG PET/CT have ill-defined
margins, and those in ultrasonography were the taller than wide, well defined spiculated
margin, and showed micro or macrocalcification. |
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| Keyword : Cancer; FDG PET; Ultrasonography; Thyroid incidentaloma |
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pdf파일 : 075-83이재아.pdf 
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> Journal > Journal Search 
Journal of Korean Society of Ultrasound in Medicine 2010 ; 29 (2) : p.75-83
