Diagnostic Ultrasound - Abdomen and Pelvis

Solid Renal Mass
Differential Diagnoses: Kidney
(Left) Longitudinal ultrasound
shows a large, homogeneous,
hyperechoic renal mass
similar in echogenicity to the
renal sinus fat ſt. While
suggestive of
angiomyolipoma, confirmation
with CT or MR is necessary.
(Right) Axial T1 opposed-phase
MR of the same patient shows
multiple regions of low signal
ſt within the mass indicating
fat next to soft tissue. This
confirms angiomyolipoma.
Renal Angiomyolipoma
Renal Angiomyolipoma
(Left) Longitudinal ultrasound
performed for hematuria
shows a hypoechoic solid mass
in the upper renal sinus ,
which did not have detectable
color flow. Absence of color
flow does not exclude tumor,
presence of color flow is
suggestive of tumor. Unlike
the column of Bertin, this mass
did not arise from the cortex.
(Right) Longitudinal
ultrasound shows a solid renal
pseudolesion extending
from cortex to renal sinus. The
echogenicity is identical to
cortex.
Upper Tract Urothelial Cancer
Column of Bertin
(Left) Longitudinal color
Doppler ultrasound shows a
hyperechoic, wedge-shaped
cortical lesion st with
decreased internal color flow.
(Right) Longitudinal
ultrasound shows the left
kidney (between calipers) with
mild pelvic diltation st. A solid
"mass" ſt projects from the
lower pole. The "mass"
resembles normal kidney. No
kidney was seen in the right
renal fossa.
Focal Pyelonephritis
Crossed Fused Ectopia
970