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Thyroid nodules ≤ 5 mm on ultrasonography: are they "leave me alone" lesions?

Authors
 Hee Jung Moon  ;  Hye Sun Lee  ;  Eun-Kyung Kim  ;  Su Yeon Ko  ;  Jae Young Seo  ;  Woon Ju Park  ;  Hye Young Park  ;  Jin Young Kwak 
Citation
 ENDOCRINE, Vol.49(3) : 735-744, 2015 
Journal Title
 ENDOCRINE 
ISSN
 1355-008X 
Issue Date
2015
MeSH
Adult ; Aged ; Biopsy, Fine-Needle ; Diagnosis, Differential ; Disease Management ; Disease Progression ; Female ; Humans ; Lymphatic Metastasis ; Male ; Middle Aged ; Postoperative Care ; Recurrence ; Thyroid Neoplasms/diagnostic imaging ; Thyroid Neoplasms/mortality ; Thyroid Neoplasms/therapy ; Thyroid Nodule/diagnostic imaging* ; Thyroid Nodule/mortality ; Thyroid Nodule/therapy* ; Thyroidectomy ; Ultrasonography
Keywords
Small thyroid cancer ; Fine-needle ; Biopsy ; Ultrasonography
Abstract
The incidence of small thyroid malignancy has increased. However, there is no evidence-based guideline for managing thyroid nodules ≤ 5 mm on ultrasonography (US). We evaluated how to manage thyroid nodules ≤ 5 mm. Thyroid nodules ≤ 5 mm in size on US that had undergone surgery and US-guided fine-needle aspiration were eligible. A total of 3,117 thyroid nodules in 3,012 patients were included. The size changes of malignant and benign nodules during follow-up were evaluated. Thyroid malignancies were classified according to follow-up and surgery time within and after 12 months. Clinico-pathological characteristics were compared. Of 3,117 nodules, 1,639 nodules in 1,619 patients were benign and 1,478 in 1,427 were malignant. Only 5.8 and 1.2 % of malignant nodules and 6.8 and 4.2 % of benign nodules increased in size when a 2-mm and 3-mm change on US were referenced. Of 1,079 patients with an index malignancy ≤ 5 mm, extrathyroidal extension, lymph node metastasis, recurrence, and mortality were not significantly different between patients with and without follow-up and between patients with surgery within 12 months and after 12 months. None of the patients who underwent surgery had distant metastasis and none died of thyroid malignancy. In thyroid nodules ≤ 5 mm found on US, US-FNA could be recommended in cases of increased size during US follow-up if lateral LNM was not found because a delay in surgery did not impact cancer recurrence and mortality.
Full Text
http://link.springer.com/article/10.1007%2Fs12020-015-0526-9
DOI
10.1007/s12020-015-0526-9
Appears in Collections:
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Ko, Su Yeon(고수연)
Kwak, Jin Young(곽진영) ORCID logo https://orcid.org/0000-0002-6212-1495
Kim, Eun-Kyung(김은경) ORCID logo https://orcid.org/0000-0002-3368-5013
Moon, Hee Jung(문희정) ORCID logo https://orcid.org/0000-0002-5643-5885
Park, Woon Ju(박운주)
Park, Hye Young(박혜영)
Seo, Jae Young(서재영)
Lee, Hye Sun(이혜선) ORCID logo https://orcid.org/0000-0001-6328-6948
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/140693
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