肾脏少见恶性肿瘤MSCT表现及对照分析

The value of multi-slice spiral CT in differential diagnosis of rare renal malignant tumors

目的:探讨多层螺旋CT(multi-slice spiral CT,MSCT)对肾脏少见恶性肿瘤鉴别诊断的价值。方法:回顾性收集32例肾脏少见恶性肿瘤,其中集合管癌6例,黏液样小管状和梭形细胞癌5例,嫌色细胞癌21例,分析它们的临床特点及MSCT多期增强后的影像特征,对肿瘤间各参数的差异进行统计学分析。结果:chrRCC与CDC在形态、边界、皮质期NEV、髓质期NEV、转移或侵犯方面差异均有统计学意义(P <0.05);chrRCC与MTSCC在肿瘤最大径、平扫密度、皮质期NEV、髓质期NEV方面差异均有统计学意义(P <0.05);CDC与MTSCC在肿瘤最大径方面差异无统计学意义(P> 0.05)。结论:MSCT多期增强扫描影像特点有利于CDC、MTSCC与chrRCC之间的鉴别诊断。

Objective To investigate the value of multi-slice spiral CT(MSCT) in the differential diagnosis of rare renal malignant tumors.Methods 32 cases of rare renal malignant tumors including 6 cases of collecting duct carcinoma,5 cases of mucinous tubular and spindle cell carcinoma and 21 cases of chromophobe renal cell carcinoma were retrospectively collected to analyze their clinical characteristics and imaging features after MSCT multi-phase enhancement,and the differences of parameters among tumors were statistically analyzed.Results The shape,boundary,NEV in cortical and medulla phase,metastasis or invasion had significant differences between chr RCC and CDC(P<0.05),the tumor maximum diameter,the density of plain scan,NEV in cortical and medulla phase had significant differences between chrRCC and MTSCC(P<0.05),there was no statistically significant difference between chrRCC and CDC(P > 0.05).Conclusion The features of MSCT multi-phase enhanced scan were conducive to the differential diagnosis of CDC,MTSCC and chrRCC.