Diagnostic Ultrasound - Abdomen and Pelvis

Solid Renal Mass
Renal Lymphoma
Renal Leukemia and Myeloma
(Left) Longitudinal ultrasound
of the kidney demonstrates a
very hypoechoic central lesion
ſt with focal calyceal
dilatation st. Lymphoma may
have a pseudocystic
appearance as in this case.
(Right) Longitudinal
ultrasound shows hypoechoic
enlargement of the upper pole
of the kidney ſt from
myeloma. The renal sinus fat is
still discrete st but likely
involved.
Differential Diagnoses: Kidney
Other Renal Tumors
Other Renal Tumors
(Left) Longitudinal ultrasound
shows a large, solid lower pole
renal mass , which is
hyperechoic to normal kidney
ſt. Given its size,
nephrectomy was performed.
(Right) Axial CECT of the same
patient shows a large,
enhancing, solid renal mass st
with a central scar ſt classic
for oncocytoma.
Renal Sinus/Replacement Lipomatosis
Renal Sinus/Replacement Lipomatosis
(Left) Longitudinal ultrasound
of the renal fossa reveals no
normal kidney. There is a large
shadowing stone
surrounded by soft tissue of
intermediate echogenicity st.
(Right) Axial CECT of the same
patient confirms a staghorn
calculus surrounded by fat
st. There is barely any
residual renal parenchyma ſt.
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