Clinical Researches
Associations of the BRAF V600E mutation with sonographic features in patients with papillary thyroid carcinoma
Zhiyan Luo, Yurong Hong, Qing Wen, Caoxin Yan, Huifang Weng, Guoqiang Mo, Pintong Huang
Published 2016-09-25
Cite as Chin J Ultrasonogr, 2016, 25(9): 785-789. DOI: 10.3760/cma.j.issn.1004-4477.2016.09.012
Abstract
ObjectiveTo evaluate the association of the BRAF V600E mutation with sonographic features in patients with papillary thyroid carcinoma.
MethodsA consecutive series of 61 papillary thyroid carcinoma(PTC) was evaluated by US and elastography before US-FNA, BRAF V600E mutation and surgery.The PTCs were categorized into 2 groups according to the results of the BRAF V600E mutation, BRAF-positive and BRAF-negative patients. The sonographic features were compared between BRAF-positive and BRAF-negative patients.
ResultsThe BRAF V600E mutation was detected in 82% of patients (50 of 61). There were no significant difference between BRAF-positive and BRAF-negative PTC on sonographic features including the nodular size, echogenicity, shape, margin, calcification and the pattern of blood flow.However the prevalence of PTC with a score higher than 4 on the Hong et al score was 72% (36/50) in the BRAF-positive group, significantly higher than 36.4%(4/11) in the BRAF-negative group(P=0.024). A score higher than 4 correlated highly with a BRAF-positive diagnosis (sensitivity 72.0%, specificity 63.6%, positive predictive value 90.0%, negative predictive value 33.3%, accuracy 70.5% and OR 4.5).
ConclusionsThe BRAF V600E mutation was significantly associated with elastography classification, a score higher than 4 on the Hong et al score could highly predict the occurrence of BRAF V600E mutation in papillary thyroid cancer.
Key words:
Ultrasonography; Thyroid neoplasms; Biopsy, fine-needle; BRAF V600E mutation
Contributor Information
Zhiyan Luo
Department of Ultrasound, the Second Affiliated Hospital, Zhejiang University College of Medicine, Hangzhou 310009, China
Yurong Hong
Qing Wen
Caoxin Yan
Huifang Weng
Guoqiang Mo
Pintong Huang