Diagnostic Ultrasound - Abdomen and Pelvis

Target Lesions in Liver
Hepatic Metastases
Hepatocellular Carcinoma (HCC)
(Left) Transverse abdominal
US in a patient with lung
cancer metastases to the liver
shows a hepatic metastasis
with a target appearance in
which an isoechoic lesion is
surrounded by a hypoechoic
rim st. (Right) Transverse
color Doppler US of the liver
shows a hyperechoic HCC st
with a hypoechoic halo ſt,
which creates a target
appearance. Detectable
internal vascularity within
the tumor is seen.
Differential Diagnoses: Liver
Hepatic Lymphoma
Fungal Hepatic Abscess
(Left) Transverse abdominal
grayscale ultrasound in a
patient with lymphoma shows
several hypoechoic masses
with central echogenic cores
st surrounded by a
hypoechoic rim ſt. (Right)
Longitudinal grayscale US of
the liver shows a fungal
abscess that has an echogenic
center ſt surrounded by a
hypoechoic rim st, which
creates a target appearance.
Pyogenic Hepatic Abscess
Hepatic Atypical Hemangioma
(Left) Transverse abdominal
US shows multiple hepatic
abscesses ſt that appear as
isoechoic masses surrounded
by thin hypoechoic rims.
(Right) Longitudinal grayscale
US of the liver shows an
atypical hemangioma with
"reverse target" appearance,
which is a hypoechoic mass ſt
surrounded by hyperechoic rim
st.
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