Follicular thyroid adenoma with eggshell calcification presenting as an intensely hypermetabolic lesion on 18F-FDG PET/CT.
We report herein a case of follicular thyroid adenoma with an eggshell calcification presenting as an intensely hypermetabolic lesion on combined (18)F-fluorodeoxyglucose whole-body PET and CT ((18)F-FDG PET/CT) performed for staging work-up in a 68-year-old woman who had undergone distal gastrectomy with Billroth II anastomosis for early gastric carcinoma. The mass was intensely hypermetabolic (SUV(max) = 21.3 g/mL) on combined (18)F-FDG PET/CT, hypoechoic with an interrupted eggshell calcification on gray-scale ultrasonography (US), and showed intranodular vascularity on power Doppler US. Follicular adenoma should be considered in the differential diagnosis of a mass with an eggshell calcification on US and intense hypermetabolism on (18)F-FDG PET/CT.
Lee
Sang Kwon
SK
Department of Radiology, Dongsan Medical Center, Keimyung University School of Medicine, 194 Dongsan-dong, Jung-gu, Daegu 700-712, South Korea.
Rho
Byung Hak
BH
D000236:Adenoma / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D000368:Aged; D002114:Calcinosis / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D019788:Fluorodeoxyglucose F18; D005500:Follow-Up Studies; D006801:Humans; D006980:Hyperthyroidism / Q000175:diagnosis* / Q000209:etiology / Q000378:metabolism; D049268:Positron-Emission Tomography / Q000379:methods*; D019275:Radiopharmaceuticals; D013964:Thyroid Neoplasms / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D013965:Thyroidectomy; D014057:Tomography, X-Ray Computed / Q000379:methods*; D018615:Ultrasonography, Doppler, Color
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18