Sonographic and CT Features of Follicular Thyroid Carcinoma with Interrupted Eggshell Calcification Presenting with Renal and Bony Metastases: A Case Report

• Published in: Journal of the Korean Society of Radiology Vol. 70; no. 6; pp. 403 - 407
• Main Authors: Lee, Sang Kwon, Kwon, Sun Young, Kim, See Hyung, Rho, Byung Hak
• Format: Journal Article
• Language: English
• Published: 대한영상의학회 01.06.2014
• Subjects: 방사선과학
• ISSN: 1738-2637; 2288-2928; 2951-0805
• DOI: 10.3348/jksr.2014.70.6.403

We report a case of follicular thyroid carcinoma (FTC) in a 74-year-old man, with interrupted eggshell calcification presenting with renal and bony metastases. The abdominal and chest CT showed three homogeneously enhancing masses in the right kidney, second lumbar vertebra, and left fourth rib. The neck CT revealed a mass with interrupted eggshell calcification and homogeneous enhancement in the left thyroid lobe. A thyroid mass with interrupted eggshell calcification and its peripheral and central vascularity had excellent demonstration on sonography. The pathologic findings of the specimens of the thyroid mass, obtained by sonographically guided fine-needle aspiration biopsy, and the renal mass, obtained by sonographically guided core-needle biopsy, were consistent with follicular neoplasm and metastatic follicular carcinoma, respectively. The interrupted eggshell calcification of FTC in the elderly patients may frequently be associated with the distant metastasis. Thus, this may potentially represent a poor prognostic sign rather than a favorable one. KCI Citation Count: 0