Diagnostic Ultrasound - Abdomen and Pelvis

Crohn Disease
Diagnoses: Bowel
(Left) Grayscale ultrasound
shows inflamed terminal ileum
with a fistula to
another loop of small bowel.
(Right) Transabdominal
ultrasound shows a small fluid
collection in the mesentery
with multiple connections
to the adjacent bowel
(Left) A heterogeneous fluid
collection ſt is seen in
inflamed mesentery next to a
thick-walled loop of ileum .
Note the echogenic gas
bubbles in the wall of the
bowel representing a site of
deep ulceration/fistula .
(Right) Grayscale ultrasound
shows a hypoechoic line ſt
connecting 2 adjacent loops of
bowel compatible with an
enteroenteric fistula
(Left) Long-axis ultrasound
shows marked thickening of
the sigmoid colon ſt.
Numerous round hypoechoic
mural lesions are seen .
(Right) Color Doppler
ultrasound in the same patient
is shown. The round
hypoechoic mural lesions are
avascular along with
marked hyperemia of the
bowel wall raising concern
that these were intramural
abscesses.
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