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Vascular » Visceral vascular
Renal arteriovenous fistula
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Presentation A 35 year old male, 24 hours status post renal transplant was referred to assess for acute rejection. He had undergone an intraoperative biopsy.
Caption: Longitudinal color Doppler of transplant kidney
Description: There is increased vascularity in the upper pole with aliasing.
Caption: Spectral waveform analysis
Description: There is arterialization of venous flow with increased turbulence. This is consistent with an arteriovenous fistula.
Differential Diagnosis Renal arteriovenous fistula
Final Diagnosis Renal arteriovenous fistula
Discussion A dicussion on renal arteriovenous fistula has been previously published on SonoWorld [click here to view].  The previously published case demonstrated the abnormal arterial waveform characteristic of AV fistula whereas the current case illustrates arterialization of a venous waveform.
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