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Cytological results of ultrasound-guided fine-needle aspiration cytology for thyroid nodules: emphasis on correlation with sonographic findings

Authors
 Mi-Jung Lee ; Soon Won Hong ; Eun-Kyung Kim ; Min Jung Kim ; Jin Young Kwak ; Woung Youn Chung 
Citation
 Yonsei Medical Journal, Vol.52(5) : 838~844, 2011 
Journal Title
 Yonsei Medical Journal 
ISSN
 0513-5796 
Issue Date
2011
Abstract
PURPOSE: To compare the cytological results of ultrasound-guided fine-needle aspiration (US-FNA) cytology of thyroid nodules to sonographic findings and determine whether US findings are helpful in the interpretation of cytological results. MATERIALS AND METHODS: Among the thyroid nodules that underwent US-FNA cytology, we included the 819 nodules which had a conclusive diagnosis. Final diagnosis was based on pathology from surgery, repeated FNA cytology or follow-up of more than one year. Cytological results were divided into five groups: benign, indeterminate (follicular or Hurthle cell neoplasm), suspicious for malignancy, malignant, and inadequate. US findings were categorized as benign or suspicious. Cytological results and US categories were analyzed. RESULTS: Final diagnosis was concluded upon in 819 nodules based on pathology (n=311), repeated FNA cytology (n=204) and follow-up (n=304), of which 634 were benign and 185 were malignant. There were 560 benign nodules, 141 malignant nodules, 49 nodules with inadequate results, 21 with indeterminate results, and 48 that were suspicious for malignancy. The positive and negative predictive values of the US categories were 59.1% and 97.0%, and those of the cytological results were 93.7% and 98.9%. The US categories were significantly correlated with final diagnosis in the benign (p=0.014) and suspicious for malignancy (p<0.001) cytological result groups, but not in the inadequate and indeterminate cytological results groups. The false positive and negative rates of cytological results were 1.9% and 3.2%. CONCLUSION: Sonographic findings can be useful when used alongside cytological results, especially in nodules with cytological results that are benign or suspicious for malignancy.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/93461
DOI
10.3349/ymj.2011.52.5.838
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Surgery
1. 연구논문 > 1. College of Medicine > Dept. of Radiology
1. 연구논문 > 1. College of Medicine > Dept. of Pathology
Yonsei Authors
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