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a-c Renal imaging. Left to right. 2a Ultrasound: Bilateral poor parenchymal perfusion, and poor visualisation of renal arteries and veins. 2b CT angiogram: patent renal arteries with bilateral poor parenchymal perfusion. Renal veins appear patent. 2c MAG3 scan: while markedly reduced renal excretion, there is evidence of some small degree of residual function as demonstrated by tracer excretion into the urinary bladder
