Diagnostic Ultrasound - Abdomen and Pelvis

Caroli Disease
(Left) Oblique abdominal
ultrasound in a patient with
Caroli disease shows multiple
dilated intrahepatic ducts ſt.
(Right) Oblique abdominal
color Doppler ultrasound in
the same patient with Caroli
disease shows dilated
intrahepatic ducts ſt. The
"intraductal bridging" sign is
seen in 1 of the dilated ducts
in which an echogenic
septum traverses the dilated
bile duct lumen. This is a
finding often seen with Caroli
disease.
Diagnoses: Liver
(Left) Axial CECT in a patient
with Caroli disease shows
massive dilatation of
intrahepatic bile ducts ſt.
Note the enhancing dots
within many of the cystic
structures representing portal
radicles ("central dot"
sign). (Right) Oblique
abdominal color Doppler
ultrasound in the same patient
with Caroli disease shows
multiple dilated intrahepatic
ducts ſt with central flow ,
creating a "central dot" sign
appearance.
(Left) Oblique abdominal color
Doppler ultrasound in a
patient with Caroli disease
shows several dilated
intrahepatic ducts ſt adjacent
to portal veins . (Right)
Oblique abdominal color
Doppler ultrasound in the
same patient with Caroli
disease shows color flow in
the portal radicles ſt that are
surrounded by the dilated
intrahepatic ducts .
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