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Updated: Jun 22, 2026

Computer-Aided Three-Dimensional Visualization in the Treatment of Locally Advanced Thyroid Cancer
Published on: June 9, 2023
Follicular thyroid carcinoma with an eggshell calcification: report of 3 cases
1Department of Radiology, Dongsan Medical Center, Keimyung University School of Medicine, 194 Dongsan-dong, Jung-gu, Daegu 700-712, Korea. sklee@dsmc.or.kr
Objective:
The purpose of this series is to report 3 cases of follicular thyroid carcinoma with an eggshell calcification along with their imaging findings.
Methods:
Imaging findings on gray scale and power Doppler (PD) sonography (n = 3), computed tomography (CT; n = 3), and integrated fluorodeoxyglucose F 18 ((18)F-FDG) whole-body positron emission tomography (PET)/CT (n = 1) were assessed.
Results:
Of the 3 cases, two 75-year-old women had bone metastasis, and one 54-year-old woman had a thyroid incidentaloma on sonography. All 3 cases had a spherical mass with an interrupted eggshell calcification on gray scale sonography and CT; 2 revealed intranodular vascularity on PD sonography, and 1 showed intense hypermetabolism (maximum standardized uptake value, 7.9 g/mL) on integrated (18)F-FDG whole-body PET/CT.
Conclusions:
Follicular carcinoma should be considered in the differential diagnosis of a thyroid nodule with an eggshell calcification.
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