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目的探讨肾透明细胞癌(CCRCC)的超声造影增强模式及定量参数与肿瘤侵袭性的关系。方法回顾性分析75例肾透明细胞癌的超声造影表现并通过时间-强度曲线软件得到相关参数,根据病理结果,将肿瘤分为未侵犯组(41例)、侵犯组(34例),然后进行对比分析。结果 (1)CCRCC超声造影多表现为快进、快出或慢出、等或高增强,两组间比较差异无统计学意义(P>0.05);(2)CCRCC的不均匀增强多见于侵犯组(P<0.05),而CCRCC的假包膜征及长径≤3cm的肿块多见于未侵犯组(P<0.05);(3)侵犯组CCRCC的曲线尖度、曲线下面积及ΔPI均高于未侵犯组(P<0.05),穿透肾包膜的CCRCC在曲线尖度及ΔPI上均高于侵犯肾被膜者(P<0.05)。结论 CCRCC的超声造影特点与其侵袭性有一定的关系。
Objective To investigate the relationship between enhancement mode and quantitative parameters of renal clear cell carcinoma (CCRCC) and tumor invasiveness. Methods The contrast-enhanced ultrasound findings of 75 cases of clear cell renal cell carcinoma were retrospectively analyzed. The related parameters were obtained by time-intensity curve software. According to the pathological results, the tumors were divided into noninvasive group (41 cases) and invasive group (34 cases) Comparative analysis. Results (1) The contrast-enhanced CCRCC showed fast forward, fast or slow, equal or high enhancement, with no significant difference between the two groups (P> 0.05); (2) (P <0.05). However, pseudocapsules of CCRCC and lumps with the diameter of less than 3 cm were more common in the noninvasive group (P <0.05). (3) The curve sharpness, area under the curve and ΔPI In the non-infiltrated group (P <0.05), the CCRCC penetrating the renal capsule was higher than that of the renal capsule in curve sharpness and ΔPI (P <0.05). Conclusion The characteristics of CCRCC and its invasiveness have certain relationship.