肾细胞癌的多层螺旋CT表现与病理对照

目的分析肾细胞癌多层螺旋(MSCT)增强扫描特征与病理类型的关系。方法回顾性分析经手术病理证实的32例肾细胞癌术前MSCT的征象并与手术病理结果进行对照分析。结果 32例中,28例病理诊断为透明细胞癌,CT增强扫描特征为皮质期肿瘤增强部分与肾皮质增强相似(可达146～175HU),肾实质期肿瘤内对比剂轻微廓清,肾盂期明显廓清呈相对低密度;4例为颗粒状细胞癌,三期增强扫描均表现为无增强到轻度增强(CT值38～55HU)。32例肾细胞癌三期增强扫描,诊断符合率为100%,分期诊断符合率为96.42%。结论肾细胞癌的MSCT三期增强扫描表现对术前肿瘤的诊断和判断肾细胞癌肿瘤细胞的类型、分期有重要意义。

Multi-slice spiral CT and pathological correlation of renal cell carcinoma

Objective To analyze relationship between characteristics on multi-slice spiral CT （MSCT） and pathology of renal cell carcinoma. Methods Multi-slice spiral CT and surgical pathological results on 32 cases of renal cell carcinoma were retrospectively analyzed. Results Of the 32 cases, 28 were pathologically diagnosed as clear cell carcinoma, with tumor contrast enhancement similar to the normal cortex in the renal cortical phase （146-175HU）, slight contrast washout in the renal parenchyma phase and significant contrast washout from the tumor in the pyelographic phase. Granular cell carcinoma in 4 patients showed no or mild contrast enhancement （38- 55HU） in all three phase. The overall diagnostic accordance rate was 100%, with preoperative staging accordance rate of 96.42%. Conclusion The triple-phase contrast-enhanced MSCT is useful in predicting the tumor cell type and staging of renal cell carcinoma.