nt ?Late stages: Little/absent enhancement?Hydronephrosis; deep vein thrombosis; renal vessel involvementР7РCTРRadioGraphics 2013; 33;535–552РMRIР8РActive inflammation stage?High T2 signal intensity; early enhancement?Late inactive stage?Low T2 signal intensity; little/absent enhancement?Treatment response?Decrease in T2 signal intensity and enhancementРRadioGraphics 2013; 33;535–552РIdiopathic vs. Malignant lesionРMalignant lesion?Nodular aspect?Mass effect on neighbouring structures?Anterior displacement of aorta and IVC?Idiopathic RPF?Infiltrative aspect?Envelope adjacent structuresР9РDistinction may not hold true in many cases! Differentiation between idiopathic and malignant forms cannot be made only on the basis of imaging findings.РRev med Interne. 2014 Nov 18Р10Р10994276; M; 46y.o.
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