Diagnostic Ultrasound - Abdomen and Pelvis

Renal Vein Thrombosis
(Left) Longitudinal color
Doppler ultrasound of a renal
transplant on postoperative
day 1 reveals no detectable
parenchymal vascularity. The
only area of detectable
vascularity is an arterial signal
at the hilum . (Right)
Spectral Doppler in the same
patient reveals pandiastolic
reversal of flow in the main
renal artery which occurred
secondary to acute renal vein
thrombosis. Renal vein
patency could not be restored
in this patient and the patient
required explantation on day
3.
Diagnoses: Urinary Tract
(Left) Color Doppler
ultrasound of the left upper
quadrant in a 33-week
premature infant shows an
irregular and hypovascular
mass st. The mass was only
minimally reniform and was
described as a tumor on an
outside hospital imaging
report. (Right) Spectral
Doppler in the same patient
shows pandiastolic reversal of
flow in the renal artery
secondary to acute renal vein
thrombosis. This unfortunate
infant also suffered an
ipsilateral adrenal
hemorrhage (not shown).
(Left) This patient had chronic
renal obstruction (now
stented) and infections due to
a bladder tumor. Axial
contrast-enhanced CT shows a
tubular, low-density filling
defect in the left renal vein ,
with at most minimal flow
around the periphery of the
clot ſt. (Right) Coronal
reformatted CT in a different
patient with nephrotic
syndrome shows diffuse left
renal vein thrombosis , with
extension into the IVC . This
patient later suffered a small
pulmonary embolism.
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