Thyroid Nodules Detected by Contrast-Enhanced Magnetic Resonance Angiography: Prevalence and Clinical Significance
- Authors
- Lim, Hyun Kyung; Park, Sung Tae; Ha, Hongil; Choi, Seo-youn
- Issue Date
- 26-Feb-2016
- Publisher
- Public Library of Science
- Keywords
- thyroid incidentaloma; MR angiography
- Citation
- PLoS ONE, v.11, no.2
- Journal Title
- PLoS ONE
- Volume
- 11
- Number
- 2
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/9345
- DOI
- 10.1371/journal.pone.0149811
- ISSN
- 1932-6203
- Abstract
- Background and Purpose Incidental thyroid lesions are frequently found on contrast-enhanced magnetic resonance (CE-MR) angiography. The purpose of this study is to determine the prevalence of thyroid incidentalomas detected by CE-MR angiography and to evaluate their clinical significance by correlation with ultrasound (US) and cytopathological results. Materials and Methods We retrospectively reviewed 3,299 consecutive CE-MR angiography examinations performed at our institution between January 2010 and March 2013. Two radiologists evaluated the CE-MR angiography imaging in consensus regarding the presence, location, and vascularity of thyroid incidentaloma. We correlated these findings with follow-up US and cytopathologic results. Results The prevalence of thyroid incidentalomas detected by CE-MR angiography was 4.6% (152/3,299 patients). CE-MR angiography showed hypervascularity in 86.8% (145/167), isovascularity in 8.4% (14/167), and hypovascularity in 4.8% (8/167) of thyroid nodules compared to vascularity of thyroid parenchyma. Among the patients with thyroid incidentaloma, 34 patients (22.4%) were followed by US examination, and all 36 nodules on CE-MR angiography were detected on follow-up US. Of these nodules, 9 (25%) nodules were classified as probably benign, 26 (72.2%) as indeterminate, and 1 (2.8%) as suspicious malignant nodule. Among the 16 nodules with available cytopathologic results, 12 nodules were benign, 2 nodules were follicular neoplasm, and 2 nodules showed non-diagnostic results. Conclusion Incidental thyroid nodules were found in 4.6% of CE-MR angiography examinations. Because the high incidence of indeterminate US feature among thyroid incidentaloma, when a thyroid incidentaloma is detected on CE-MR angiography, further evaluation with US should be performed.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Medicine > Department of Radiology > 1. Journal Articles
- College of Medicine > Department of Radiology > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.