肾嗜酸细胞腺瘤与嫌色细胞癌的MDCT表现及鉴别

目的:探讨肾脏嗜酸细胞腺瘤(Renal oncocytoma,RO)与嫌色细胞癌(Chromophobe renal cell carcinoma,ChRCC)的多层螺旋CT(MDCT)表现,提高术前诊断准确率.方法:回顾性分析经病理证实的33例RO(33个病灶)和65例ChRCC患者(66个病灶)的临床及影像资料,并...

Imaging features and differential diagnosis of renal oncocytoma and chromophobe cell carcinoma on MDCT

Objective:To investigate the multi-detector spiral computed tomography(MDCT)imaging findings of renal oncocytoma(RO)and chromophobe renal cell carcinoma(ChRCC)to improve the accuracy of preoperative diagnosis.Methods:The clinical and imaging data of 33 cases of RO(33 tumors)and 65 cases of ChRCC(66 tumors)confirmed by pathology were retrospectively analyzed,and the MDCT features of two groups were compared.The Chi square test was used to compare the image features,and T-test was used to compare CT enhancement value and relative enhancement rate.All patients underwent MDCT plain scan and three-phase enhanced scan before operation.Results:There were significant differences in the central scar,solid partial enhancement CT value,relative enhancement rate and tumor invasion of capsule between RO and ChRCC groups(P<0.001).Besides,there were significant differences in age,the segmental inversion sign,compression of renal pelvis and calyces(with or without invasion)and scar enhancement CT value and relative enhancement rate between the two groups(P<0.05).There were no significant differences in gender,clinical symptoms,tumor location,shape,maximum diameter,calcification and cysts between the two groups.Conclusion:The MDCT features of the tumor,such as central scar,segmental inversion sign,solid part of the tumor and scar in each phase of enhancement and relative enhancement rate,tumor invasion of capsule,compression of renal pelvis and calyces(with or without invasion)have important differential value for RO and ChRCC.