MIRA3006 Lecture Notes - Lecture 5: Renal Cell Carcinoma, Renal Vein, Renal Cortex
5 Aug 2018
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Document Summary
Renal cell carcinoma: most common and it occurs mainly in the renal cortex. Hypovascular carcinoma, less vascularity and contrast uptake. Ct and us used to determine the stage of rcc. Ct enhancing mass (less than normal parenchyma) with distortion of parenchyma. calcifications in 10% presence of filling defects in collecting system, renal veins and ivc. The corticomedullary phase 25-40 sec post injection is strongly recommended. It helps to differentiate tumour from pseudotumour and to assess enhancement of a lesion. The nephrogenic phase (+- 100 sec post injection) is the most important phase for the detection of tumour. Signal characteristic variable depending on degree of haemorrhage and necrosis, best for detecting venous invasion; problem solving modality when ct is equivocal. In t1, tumour is isointense or hypo compared to normal kidney tissue. Small tumours are generally hypoechoic, large tumorus hyperechoic. There is no known technique that has been validated for differentiating different rcc subtypes by using us.
