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中文摘要：
目的 探讨CEUS鉴别诊断甲状腺良恶性结节的价值。方法 回顾性分析62例患者67个甲状腺结节的CEUS表现。结果 甲状腺恶性结节CEUS多表现为不均匀增强、边界不清，甲状腺良性结节多表现为周边环状强化。根据不均匀强化诊断恶性结节的敏感度为86.84%，特异度为44.83%，阳性预测值为67.35%，阴性预测值为72.22%；边界不清诊断恶性结节的敏感度81.58%，特异度65.52%，阳性预测值75.61%，阴性预测值73.08%；环状强化诊断良性结节的敏感度41.38%，特异度97.37%，阳性预测值92.31%，阴性预测值68.52%。结论 CEUS对鉴别诊断甲状腺良恶性结节具有一定价值。
英文摘要：
Objective To investigate the value of CEUS in differential diagnosis of benign and malignant thyroid nodules. Methods CEUS characteristics of 67 thyroid nodules in 62 patients were retrospectively analyzed. Results Thyroid carcinomas showed heterogeneous enhancement and irregular margin more often than benign nodules, while ring enhancement often occurred in benign ones. Heterogeneous enhancement and irregular margin often indicated carcinoma, and the sensitivity, specificity, positive predictive value and negative predictive value were 86.84% and 81.58%, 44.83% and 65.52%, 67.35% and 75.61%, 72.22% and 73.08%, respectively. Ring enhancement often indicated benign nodule, and the sensitivity, specificity positive, predictive value and negative predictive value was 41.38%, 97.37%, 92.31% and 68.52%, respectively. Conclusion CEUS is valuable in differentiating benign thyroid nodules from malignant ones.
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