[Correlation between Contrast-enhanced Ultrasound and Risk of Tumor Recurrence in Papillary Thyroid Carcinoma]

Objective To explore the association between contrast-enhanced ultrasound and risk of tumor recurrence in papillary thyroid carcinoma(PTC). Methods A total of 287 PTCs in 287 patients who underwent surgery,conventional ultrasound,and contrast-enhanced ultrasound(CEUS)were enrolled in this study.According to 2015 American Thyroid Association(ATA)Modified Initial Risk Stratification System,the patients were categorized into three groups:low risk,intermediate risk,and high risk.The CEUS patterns of PTCs were compared between different risk stratifications. Results Hypo-enhancement was presented in 57.6% of ATA low-risk PTCs,iso-enhancement in 62.3% of ATA intermediate-risk PTCs,and hyper-enhancement in 48.2% of ATA high-risk PTCs(