ISSN: 1899-0967
Polish Journal of Radiology
Established by prof. Zygmunt Grudziński in 1926 Sun
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1/2021
vol. 86
 
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Head and neck radiology
abstract:
Original paper

Different sonographic features of peripheral thyroid nodule calcification and risk of malignancy: a prospective observational study

Mehrdad Nabahati
1
,
Naser Ghaemian
1
,
Zoleika Moazezi
2
,
Rahele Mehraeen
3

1.
Department of Radiology, Shahid Beheshti Hospital, Babol University of Medical Sciences, Babol, Iran
2.
Department of Endocrinology, Rohani Hospital, Babol University of Medical Sciences, Babol, Iran
3.
Department of Radiology, Rohani Hospital, Babol University of Medical Sciences, Babol, Iran
Pol J Radiol 2021; 86: e366-e371
Online publish date: 2021/06/18
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Introduction
To investigate the association of peripheral calcification, as well as its sonographic features, with thyroid nodule malignancy.

Material and methods
This study was prospectively conducted during 2015-2020 on patients diagnosed with thyroid nodule undergoing ultrasound-guided fine-needle aspiration in Shahid Beheshti teaching hospital or private offices in Babol, northern Iran. The ultrasonographic characteristics of the nodules, as well as the cytological findings, were recorded. Regression analysis was used to assess the relationship between sonographic results and malignancy. We also used receiver operator characteristics (ROC) analysis to estimate the ability of ultrasound to predict the characteristic features of malignancy, as estimated by the area under the curve (AUC).

Results
A total of 1857 thyroid nodules were finally included, of which 84 were peripherally calcified nodules. There was a significant positive association between the nodule malignancy and peripheral calcification (OR = 2.23, 95% CI: 1.13-4.35). In the nodules with peripheral calcification, significant positive associations were seen between malignancy and lobulated margin (OR = 3.85, 95% CI: 1.02-14.54) and solid composition (OR = 4.05, 95% CI: 0.99-16.53). The ROC analysis indicated that AUC for lobulated margin and solid composition was 63.8% and 66.5%, respectively, in predicting malignant thyroid nodules.

Conclusions
The findings showed that peripheral calcification on sonography can be a potential indicator of malignant thyroid nodules. Also, the presence of lobulated margin and/or solid composition, besides peripheral calcification, can be helpful in better distinguishing malignant from benign nodules.

keywords:

thyroid nodule, ultrasonography, peripheral calcification, fine-needle aspiration




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