Diagnostic Ultrasound - Abdomen and Pelvis

Small Kidney
Postobstructive Atrophy
Postobstructive Atrophy
(Left) Longitudinal ultrasound
of the left kidney shows severe
hydronephrosis ſt and
cortical thinning, which was
secondary to chronic ureteral
obstruction. However, severe
reflux can also produce this
appearance. (Right) Axial
NECT of the same patient
shows bilateral
hydronephrosis with more
atrophy on the left ſt and an
aortic stent graft st. Renal
failure precluded the use of
intravenous contrast.
Differential Diagnoses: Kidney
Partial Nephrectomy/Post Ablative
Therapy/Post Surgery
Partial Nephrectomy/Post Ablative
Therapy/Post Surgery
(Left) Longitudinal ultrasound
of a left kidney ſt post partial
nephrectomy 20 years prior.
The kidney is small (6 cm) with
preserved corticomedullary
differentiation. (Right) CECT
of the same patient shows loss
of cortex overlying mid pole
calyces ſt status post lower
pole resection.
Partial Nephrectomy/Post Ablative
Therapy/Post Surgery
Chronic Renal Infarction
(Left) Longitudinal ultrasound
of the liver and atrophic right
kidney in a patient with
testicular cancer post
retroperitoneal lymph node
dissection. The right kidney st
is very small with global
cortical thinning. Renal sinus
fat ſt is preserved (Right)
Longitudinal ultrasound of a
renal transplant with scarring
of the lower pole ſt, a
sequela of thrombosis of a
lower pole accessory artery.
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