Fig. 2

Representative images of serial Doppler ultrasound exams of patient with renal vein thrombosis post-kidney transplantation. Initial post-operative ultrasound showing (a) spectral tracing of reversed diastolic flow in the transplant renal artery near its anastomosis with color Doppler showing turbulent flow, (b) reversed intra-renal artery diastolic flow, and (c) difficulty finding transplant renal vein flow. Following successful thrombectomy, an ultrasound with color Doppler showed (d) normalized diastolic flow in the transplant renal artery and (e) patency of the transplant renal vein with normal venous waveform using spectral Doppler tracing. (f) On post-operative day 20, despite ongoing poor renal function, a Doppler ultrasound revealed relatively normal waveforms and calculated resistive indices that were not in keeping with the histology seen on biopsy (see Table 1 for resistive indices)