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Repeat fine-needle aspiration can be performed at 6 months or more after initial atypia of undetermined significance or follicular lesion of undetermined significance results for thyroid nodules 10 mm or larger

Authors
 Jieun Koh  ;  Eun-Kyung Kim  ;  Jin Young Kwak  ;  Jung Hyun Yoon  ;  Hee Jung Moon 
Citation
 European Radiology, Vol.26(12) : 4442-4448, 2016 
Journal Title
 European Radiology 
ISSN
 0938-7994 
Issue Date
2016
Abstract
OBJECTIVES: To investigate whether repeat ultrasound-guided fine-needle aspiration (US-FNA) in initial atypia of undetermined significance or follicular lesion of undetermined significance (AUS/FLUS) results could be performed 6 months after or more. METHODS: A total of 221 AUS/FLUS ≥10 mm with any follow-up were grouped according to the first follow-up interval at less than 6 months (group 1, n?=?87) and 6 months or more (group 2, n?=?134). Clinical features, final assessment of ultrasound (US) or the Thyroid Imaging Reporting and Data System (TIRADS), tumour size, extrathyroidal extension and lymph node metastasis in malignancies were compared. RESULTS: Thirty-four (15.4 %) were malignant. Age, gender, size, final assessment, TIRADS and malignancy rate were not significantly different between the two groups (p?=?0.660, 0.691, 0.502, 0.237, 0.819 and 0.420). Tumour size, extrathyroidal extension and lymph node metastasis were not significantly different between the two malignancy groups (p?=?0.770, 0.611 and 0.068). Two of 10 nodules with increased size were malignancies found at 7.1 and 25.0 months. None of 33 nodules (14.9 %) with decreased size at a median 10 months were malignant. CONCLUSIONS: Repeat US-FNA performed on nodules ≥10 mm at 6 months or more after initial AUS/FLUS results can reduce unnecessary repeat US-FNAs without progression of malignancy. KEY POINTS: ? Follow-up intervals of AUS/FLUS did not affect the malignancy rate ? Tumour stage was not different according to the follow-up intervals ? None of the nodules with decreased size were malignant ? Repeat US-FNA can be performed at ≥6 months after initial AUS/FLUS.
Full Text
https://link.springer.com/article/10.1007%2Fs00330-016-4311-9
DOI
10.1007/s00330-016-4311-9
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
고지은(Koh, Ji Eun)
곽진영(Kwak, Jin Young) ORCID logo https://orcid.org/0000-0002-6212-1495
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
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/22282913/152593
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