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Primary malignant tumors of peritoneal and retroperitoneal origin: clinical and imaging features.
[liposarcoma]
Peritoneal
carcinomatosis
and
metastatic
involvement
of
the
retroperitoneum
are
manifestations
of
many
organ-based
malignancies
and
lymphoproliferative
disorders
.
Primary
malignancies
of
peritoneal
and
retroperitoneal
origin
occur
much
less
frequently
,
and
are
difficult
to
distinguish
from
metastatic
disease
on
imaging
alone
.
However
,
the
imaging
features
of
these
primary
tumors
,
taken
in
concert
with
the
clinical
data
,
can
be
helpful
in
narrowing
the
scope
of
the
differential
diagnosis
.
This
review
presents
the
clinical
and
imaging
features
of
primary
peritoneal
and
retroperitoneal
tumors
arising
from
the
various
tissue
components
that
comprise
the
ligaments
,
mesenteries
,
and
connective
tissues
of
the
peritoneal
and
retroperitoneal
spaces
.