Renal transplant. Rising creatinine.
Transplant kidney is shown below. Which choice is most appropriate?
Hydronephrosis.Stigmata of PTLD.Pathologically echogenic cortex.Medullary nephrocalcinosis.Within normal limits.
Normal renal transplant appearance without hydronephrosis or abnormal perinephric fluid collection.
Renal Doppler: Normal resistive indices in the arcuate arteries, normal iliac artery flow.
Main renal artery velocities as follows: at the anastomosis (2.3 m/s, RI 0.92), mid artery (0.9 m/s, RI 0.82), and at the hilum (0.7 m/s, RI 0.8). Elevated renal artery flow velocity at the anastomosis is accompanied by decreased amplitude and upstroke velocity of the downstream renal artery (parvus tardus waveform).