Diagnostic Ultrasound - Abdomen and Pelvis

Solid Pancreatic Lesion
Serous Cystadenoma of Pancreas
Mucinous Cystic Neoplasm of Pancreas
(Left) Axial CECT
demonstrates clusters of tiny
cysts separated by thin
enhancing septations, in a
honeycomb pattern
characteristic of serous
cystadenoma. Note the thin
calcifications ſt. (Right)
Transverse transabdominal
ultrasound shows a wellcircumscribed,
heterogeneous,
multilocular cystic mass in the
pancreas with thick and
thin internal septations
and a thick wall ſt.
Differential Diagnoses: Pancreas
Metastasis
Lymphoma
(Left) Transverse
transabdominal ultrasound
shows an ill-defined, solid,
hypoechoic mass ſt involving
the head and body of the
pancreas. The common
hepatic artery is encased .
Note the absence of
pancreatic duct dilatation.
(Right) Transverse ultrasound
of the pancreas shows
multiple round masses in the
pancreatic tail ſt, compatible
with lymphomatous
involvement. Other abnormal
nodes were present in the
retroperitoneum st from
disseminated non-Hodgkin
lymphoma.
Solid Pseudopapillary Neoplasm
Intrapancreatic Splenule
(Left) Longitudinal ultrasound
demonstrates a wellcircumscribed,
large,
heterogeneous, echogenic
solid mass in a 17-year-old
female. Note color Doppler
flow in the periphery of the
lesion and heterogeneous
cystic areas of degeneration
ſt. (Right) Axial post-contrast
T1 FS MR in the arterial phase
shows a small, round, wellcircumscribed
lesion in the tip
of the tail of the pancreas ſt.
The lesion demonstrates
heterogeneous arterial phase
enhancement, which matches
that of the spleen st.
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