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1、Casediscussionbyabdomengroup2012-3-14HistoryFemale63ygetwoundinafall1monthagoUSG:solidmasslesionofleftkidneySPECT：highperfusioninthemasslesionofleftkidneyCorticalperiod（CTvalue:110HU;36HU)Medullaperiod（CTvalue:180HU;62HU)Dischargeperiod（CTvalue:107HU;57HU)VROp
2、eration：leftkidneyradicalcorrectionPathology：RenaloncocytomaDDXRenaloncocytoma,RORenaloncocytomaRenaloncocytomasarebenign,rare,solidtumoursofthekidney,derivedrenalcortexepitheliumofproximalconvolutedtubule.，comprising3–7%ofallrenaltumorsOccurinallages,themosti
3、nabout50y，generallymenmorethanwomen,M:F1.5～1.7:1Mostissolitary,canalsobecomplicatedwithPolycystickidney,renalangiomyolipomas,renalcancerusuallyasymptomaticanddiscoveredincidentallyRenaloncocytomaCTscannerAwell-definedmarginCentralstellatescard<3cm,homogeneous,
4、rarescard≥3cm,withvolumebecomelarger,centraloreccentricalscarwillbeoccurredfollowercalcificationCysticornecrosisrarelyRenaloncocytomaCTenhancement：CorticalperiodorMedullaperiod:substantialpartimprovedobviouslyandhomogeneously,thedegreeofenhancementislargerthan
5、orequaltothecortexinthesameperiodDischargeperiod:enhanceddegreereduce,belowtherenalparenchymadensity,higherthanmuscledensityAcentrallyplacednon-enhancingarea,likelyrepresentingafibrousscarSpoke-wheel-likeenhancementPartofthecoatingcanbeseeninroughvesselsplains
6、cancorticalperiodMedullaperiodDischargeperiodL-ROplainscanDorticalperiodDischargeperiodL-RO双肾嗜酸细胞瘤伴钙化双肾嗜酸细胞瘤右肾嗜酸细胞瘤DifferentialDiagnosisrenalangiomyolipomarenalchromophobecellcarcinoma,RCCCrenalclearcellcarcinomarenalclearcellcarcinomaDiagnosticpointLocatedint
7、hecortex，inordinanceshape,irregularmargincysticornecrosisiscommon，densitynonuniformintheplainscanrenalpelvisandrenalcalyxbedestroyed,easytotransferrichbloodsupplyfortumor,thedegreeofenhancementisgreaterthanorequaltothecortexofthesameperiodinthecorticalperiod,C
8、T>100HU,CTvaluefellrapidlyinthemedullaperiod,“Quickinquickout”Renalchromophobecellcarcinoma(RCCC)DiagnosticpointLocatedinthemedullary,expansiongrowthtorenalsinusandrenalcortical,tu
