Diagnostic Ultrasound - Abdomen and Pelvis

Hepatomegaly
Lymphoma
Lymphoma
(Left) Transverse abdominal
ultrasound in a patient with
lymphoma shows multiple
markedly hypoechoic masses
ſt throughout the right lobe
of the liver. (Right) FDG PET in
the same patient with
lymphoma shows the liver is
enlarged and diffusely
hypermetabolic throughout
the entire liver parenchyma
.
Differential Diagnoses: Liver
Metastases
Metastases
(Left) Transverse abdominal
ultrasound in a patient with
hepatic metastasis from
neuroendocrine tumor
demonstrates enlarged and
markedly heterogeneous
appearance of the liver with
numerous refractive shadows
ſt caused by underlying
isoechoic metastasis. The
portal veins are distorted
by mass effect. (Right) T1WI
C+ FS MR in the same patient
demonstrates that the
heterogeneous liver
appearance on ultrasound is
due to numerous masses ſt,
which virtually replace the
entire liver parenchyma.
Metastases
Sarcoidosis
(Left) Transverse abdominal
ultrasound in a patient with
colon cancer metastases in the
liver shows multiple
hyperechoic masses ſt, which
enlarge the liver. Posterior
acoustic shadowing
associated with the largest
mass is caused by
calcifications in the liver
metastasis. (Right) Transverse
abdominal ultrasound in a
patient with sarcoidosis shows
hepatomegaly (26 cm in
length) and heterogeneous
hepatic parenchyma ſt due to
hepatic involvement by
sarcoidosis.
869