腮腺多形性腺瘤超声造影特征分析

Analysis of the Features of Contrast-enhanced Ultrasound on Parotid Gland Pleomorphic Adenoma

目的:探讨腮腺多形性腺瘤(PA)的超声造影特点。方法:回顾性分析42例成人腮腺多形性腺瘤患者,44个肿块术前均行超声造影检查。记录PA肿块超声造影特征;绘制44个肿块(观察组)与周边正常腺体组织(对照组)的时间—强度曲线(TIC),获得PA组的定量弥散特征,比较两组达峰时间(TTP)、峰值强度(PI)、峰值半降时间(TFP)、曲线下面积(AUC)。结果:41个肿块增强后边界清晰,可见完整增强环,增强后范围无增大。时间—强度曲线显示,观察组TTP、PI、TFP、AUC与对照组比较,差异均无统计学意义(P均>0.05)。PA肿块增强后表现为“等进等出等增强”。结论:PA超声造影表现为“等进等出等增强”,增强后肿块边界清晰,有完整增强环,增强后肿块范围较二维无增大。

Objective:To explore the characteristics of contrast-enhanced ultrasound(CEUS)of parotid pleomorphic adenoma(PA).Methods:Retrospective analysis of 42 adult patients with parotid PA,the CEUS examinations of 44 masses were performed before surgery.Record the CEUS characteristics of PA masses;draw the time-intensity curve(TIC)of 44 masses(observation group)and surrounding normal gland tissue(control group)to obtain the quantitative diffusion characteristics of the PA group,and compare the time to peak(TTP),peak intensity(PI),time from peak to one half(TFP),and area under the curve(AUC)between the two groups.Results:41 tumors showed clear boundary,complete enhancement rim and no enlargement of the mass after enhancement.The TIC showed that the TTP,PI,TFP,AUC in PA tumors and surrounding normal gland tissue were no statistically significant differences between two groups(all P>0.05).The CEUS of PA tumors showed“identical in,identical out and identical enhancement”.Conclusion:The PA CEUS showed“identical in,identical out and identical enhancement”.After enhancement,the masses showed clear boundary,complete enhancement rim and no enlargement of the mass after enhancement than the two-dimensional.