Ultrasonic diagnosis of thyroid microcarcinoma and analysis on reason for its misdiagnosis
10.3877/cma.j.issn.1672-6448.2013.11.016
- VernacularTitle:甲状腺微小癌的超声诊断及漏误诊分析
- Author:
Hua-yun, GU
;
Xue-dong, DENG
;
Jian-feng, GUO
;
Qiu-long, JIN
;
Yu, YAN
- Publication Type:Journal Article
- Keywords:
Ultrasonography;
Thyroid microcarcinoma;
Misdiagnosis;
Missed diagnosis
- From:
Chinese Journal of Medical Ultrasound (Electronic Edition)
2013;(11):947-950
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the ultrasonic features of thyroid microcarcinoma (TMC) and the causes of misdiagnosis. Methods The ultrasonic features including shape, margin, echogenecity, microcalcification, vascularity and lymphadenopathy were analyzed retrospectively in 26 pathologically-proven TMC patients. Results In 26 cases, 11 cases were diagnosed correctly before operation (11/26, 42.31%), 12 cases were misdiagnosed (12/26, 46.15%) as adenoma or benign nodule, and 3 cases were missed diagnosed (3/26, 11.54%). Among the 23 cases detected on ultrasound, 21 cases were solid and hypoechoic (21/23, 91.30%);19 cases were ill-defined (19/23, 82.61%);12 cases were taller than wide in shape (12/23, 52.17%); 14 cases had microcalcification (14/23, 60.87%); 7 cases showed central or peripheral blood flow signals (7/23,30.43%) with arterial resistance index>0.70 in 3 lesions and<0.70 in 4 lesions. Conclusions Several ultrasonographic features are helpful in identiifcation of TMC, including hypo/iso-echogenecity, ill-deifned margin, taller-than-wide shape, microcalciifcation, arterial signals with high resistance index, and abnormal lymphadenopathy. Moreover, for cases with multiple lesions, to the potential co-existence of benign and malignant lesions should be considered.
