Ultrasonographic Interval Changes in Solid Thyroid Nodules after Ultrasonography-Guided Fine-Needle Aspiration
10.3348/kjr.2018.19.1.158
- Author:
Ik Jung HWANG
1
;
Dong Wook KIM
;
Yoo Jin LEE
;
Hye Jung CHOO
;
Soo Jin JUNG
;
Hye Jin BAEK
Author Information
1. Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan 47392, Korea. dwultra@nate.com
- Publication Type:Original Article
- Keywords:
Thyroid;
Thyroid nodule;
FNA;
Fine needle aspiration;
Ultrasound;
Malignancy;
Follow-up
- MeSH:
Biopsy, Fine-Needle;
Follow-Up Studies;
Humans;
Information Systems;
Needles;
Prevalence;
Punctures;
Retrospective Studies;
Thyroid Gland;
Thyroid Nodule;
Ultrasonography
- From:Korean Journal of Radiology
2018;19(1):158-166
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: None of the previous studies have investigated the interval change in ultrasonography (US) features of solid thyroid nodules (STNs) after US-guided fine-needle aspiration (US-FNA). This study aimed to assess the prevalence and characteristics of US interval changes in STNs after US-FNA. MATERIALS AND METHODS: This study included 257 STNs in 257 patients in whom thyroid US and initial US-FNA had been performed by two radiologists from January 2015 to June 2015. One of the radiologists performed single needle puncture in all cases, whereas the other radiologist used double or triple needle punctures. Follow-up US examinations were performed after 12.0 ± 6.0 months. We evaluated the prevalence and characteristics of post-FNA US interval changes through a retrospective analysis. In addition, multiple factors were correlated with post-FNA US interval changes. RESULTS: The number of needle punctures was one (n = 91), two (n = 163), and three (n = 3). Of the 257 STNs (mean diameter, 11.9 mm) in 257 patients, 35 (13.6%) showed an interval change in US features on follow-up US. Among them, 17 STNs (6.6%) showed newly developed malignant US features, including hypoechogenicity (n = 5), microcalcifications (n = 2), a spiculated margin (n = 4), hypoechogenicity with a spiculated margin (n = 5), and microcalcifications with non-parallel orientation (n = 1). Between patients who showed presence and absence of US interval changes, there were no significant differences in patient age, sex, nodule size, dichotomization, and location, Korean Thyroid Imaging Reporting and Data System categorization after FNA, practitioners involved, number of needle punctures, cytological findings, and interval between FNA and US follow-up (p > 0.05). CONCLUSION: Awareness of US interval changes after US-FNA of STNs may be helpful for the management of STNs.
