Diagnostic Ultrasound - Abdomen and Pelvis

Hepatic Adenoma
(Left) Transverse
transabdominal ultrasound
demonstrates an isoechoic
pedunculated adenoma in
the left hepatic lobe. (Right)
Axial post-contrast, delayed
phase MR in the same patient
demonstrates a typical
appearance to the
pseudocapsule , which is
hyperintense to the liver and
the adenoma ſt.
Diagnoses: Liver
(Left) Transverse
intraoperative ultrasound of a
heterogeneous adenoma in
a patient in which hepatic
adenoma ruptured and
required surgical excision.
(Right) Axial contrastenhanced
arterial phase CT
scan demonstrates a large
isodense adenoma ſt
complicated by acute rupture.
Blush of active arterial
contrast extravasation
within intratumoral
hemorrhage st as well as
hemoperitoneum are seen.
Acute rupture is a known
complication of hepatic
adenomas.
(Left) Transverse color
Doppler ultrasound shows an
echogenic adenoma ſt in the
caudate lobe of the liver.
(Right) Hepatobiliary phase
MR with gadoxetate in the
same patient shows the
adenoma in the caudate
lobe of the liver does not
retain gadoxetate. In contrast,
immediately adjacent to the
adenoma is an incidental FNH
, which does retain
gadoxetate. Hepatobiliaryspecific
MR can be very helpful
in distinguishing adenoma
from FNH.
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