J Korean Soc Radiol.  2011 Jun;64(6):537-540. 10.3348/jksr.2011.64.6.537.

Thyroid Metastasis in Pyramidal Lobe from Renal Cell Carcinoma: A Case Report

• Jung HS
• Kim DW
• Kim SS
• Jung SJ

• KMID: 1443502
• DOI: http://doi.org/10.3348/jksr.2011.64.6.537

Abstract

Thyroid metastasis is rare. The most common primary malignancy of thyroid metastasis worldwide is known to be renal cell carcinoma, but the most common primary malignancy in South Korea is breast cancer. Many studies have reported that primary renal cell carcinoma is almost unilateral and thyroid metastasis from renal cell carcinoma is a nearly ipsilateral, single lesion. We report a case of pyramidal lobe metastasis from renal cell carcinoma.

MeSH Terms

Breast Neoplasms
Carcinoma, Renal Cell
Neoplasm Metastasis
Republic of Korea
Thyroid Gland

Figure

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  Fig. 1 The axial unenhanced (A), axial enhanced (B), and sagittal enhanced (C) CT scans show a diffuse enlargement, low attenuation, and well enhancement of pyramidal lobe (arrows) without a discrete nodule.

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  Fig. 2 A, B. The transverse and longitudinal sonograms show a diffuse enlargement and low echogenicity of pyramidal lobe. C. Longitudinal color Doppler sonogram shows moderately increased vascularity of pyramidal lobe.

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  Fig. 3 A. A well-circumscribed mass is noted within thyroid parenchyma, and it shows lobular arrangement by thin fibrovascular septa (arrows) (H & E, ×10). B. The tumor shows compact, tubular or trabecular architecture separated by delicate vasculatures. The tumor cells show clear cytoplasms with distinct cell boundaries (H & E, ×200).

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