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Metastatic renal cell carcinoma in the thyroid gland: ultrasonographic features and the diagnostic role of core needle biopsy.

Authors
 Ok Kyu Song  ;  Ja Seung Koo  ;  Jin Young Kwak  ;  Hee Jung Moon  ;  Jung Hyun Yoon  ;  Eun-Kyung Kim 
Citation
 Ultrasonography, Vol.36(3) : 252-259, 2017 
Journal Title
 Ultrasonography 
ISSN
 2288-5919 
Issue Date
2017
Keywords
Biopsy, fine-needle ; Biopsy, large-core needle ; Carcinoma, renal cell ; Neoplasm metastasis ; Thyroid gland ; Ultrasonography
Abstract
PURPOSE: The aims of this study were to present the ultrasonographic (US) features of metastatic renal cell carcinoma (RCC) in the thyroid gland and to evaluate the diagnostic utility of fineneedle aspiration (FNA) and core needle biopsy (CNB). METHODS: Eight patients with nine metastatic RCC nodules in the thyroid glands who were treated from January 2002 to March 2015 in a single tertiary hospital were consecutively selected and retrospectively reviewed. US features and clinical history were obtained from the institution's medical database. FNA was performed nine times on eight nodules and CNB was performed six times on six nodules. The diagnostic utility of FNA and CNB was evaluated. RESULTS: All nine nodules showed mass formation without diffuse thyroid involvement. On ultrasonography, metastatic RCC nodules were solid (100%), hypoechoic (100%), and ovalshaped nodules with a well-defined smooth margin (88.9%) and increased vascularity (100%, with 55% showing extensive vascularity). No calcifications were noted in any nodules. Lymph node metastasis and direct extension to nearby structures beyond the thyroid gland were not found. One FNA (11%) was able to confirm metastatic RCC, whereas all six CNBs confirmed metastatic RCC. CONCLUSION: Metastatic RCC appears as oval-shaped hypoechoic solid nodules with well-defined smooth margins, no calcifications, and increased vascularity on ultrasonography. Characteristic US features along with a previous history of RCC should raise clinical suspicion, and CNB should be performed to make an accurate diagnosis.
Files in This Item:
T201702271.pdf Download
DOI
10.14366/usg.16037
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
Yonsei Authors
곽진영(Kwak, Jin Young) ORCID logo https://orcid.org/0000-0002-6212-1495
구자승(Koo, Ja Seung) ORCID logo https://orcid.org/0000-0003-4546-4709
김은경(Kim, Eun-Kyung) ORCID logo https://orcid.org/0000-0002-3368-5013
문희정(Moon, Hee Jung) ORCID logo https://orcid.org/0000-0002-5643-5885
송옥규(Song, Ok Kyu) ORCID logo https://orcid.org/0000-0002-3914-9203
윤정현(Yoon, Jung Hyun) ORCID logo https://orcid.org/0000-0002-2100-3513
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/160383
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