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Follow-up ultrasound may be enough for thyroid nodules from 5 mm to 1 cm in size

 Soo-Yeon Kim  ;  Hye Sun Lee  ;  Eun-Kyung Kim  ;  Hee Jung Moon  ;  Jung Hyun Yoon  ;  Jung Hwa Hong  ;  Jin Young Kwak 
 Endocrine, Vol.52(1) : 130-138, 2016 
Journal Title
Issue Date
Adult ; Aged ; Biopsy, Fine-Needle ; Female ; Follow-Up Studies ; Humans ; Lymph Nodes/diagnostic imaging ; Lymph Nodes/pathology* ; Lymphatic Metastasis/diagnostic imaging ; Lymphatic Metastasis/pathology ; Male ; Middle Aged ; Retrospective Studies ; Thyroid Neoplasms/diagnostic imaging ; Thyroid Neoplasms/pathology ; Thyroid Neoplasms/surgery ; Thyroid Nodule/diagnostic imaging* ; Thyroid Nodule/pathology* ; Thyroid Nodule/surgery ; Ultrasonography ; Young Adult
Fine needle aspiration ; Nodule growth ; Thyroid nodules 5–10 mm ; Ultrasound
We investigated whether follow-up ultrasound (US) is enough for thyroid nodules 5-10 mm, and whether 3 years of interval between the initial US and next US is appropriate. This retrospective study was approved by the Institutional Review Board, and the need to obtain informed consent was waived. The study included 447 thyroid nodules 5-10 mm from 378 patients who underwent initial thyroid US, and underwent 3 years or more of follow-up US. The presence and characteristics of malignancy detected on follow-up were reviewed. Maximal diameters of each nodule at the initial and last US were measured. Univariate and multivariate analysis were used to assess association with nodule growth 3 mm or larger. Seven malignancies (1.6 %, 7 of 447) were detected on a mean 70.6 ± 20.3 months (range 36-104 months). Only one had growth 3 mm or larger, and all malignancies did not have extensive extrathyroidal extension, lateral lymph nodes, or distant metastasis. 6.0 % (27 of 447) of nodules had growth 3 mm or larger. Nodules in older patients were less likely to grow, and benign-looking nodules were more likely to grow. Longer follow-up time 6 years or more was not associated with growth, and no cancers were detected during the long follow-up time. Immediate US-FNA for thyroid nodules 5-10 mm are discouraged, unless suspicious metastatic lymph nodes are present. Also, a follow-up US 3 years after the initial US may be enough for these nodules.
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
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
이혜선(Lee, Hye Sun) ORCID logo https://orcid.org/0000-0001-6328-6948
홍정화(Hong, Jung Hwa)
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