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Dedifferentiated liposarcoma arising in an esophageal polyp: a case report.
[well-differentiated liposarcoma]
Liposarcoma
is
one
of
the
most
common
sarcomas
in
adults
,
but
only
rarely
presents
as
an
esophageal
primary
.
There
have
been
several
reports
of
well-differentiated
liposarcoma
(
WDL
)
arising
in
the
esophagus
,
but
we
present
a
case
of
dedifferentiated
liposarcoma
(
DL
)
presenting
as
a
large
esophageal
polyp
.
We
believe
this
is
the
first
reported
case
of
DL
of
the
esophagus
with
morphologic
evidence
of
both
well-differentiated
and
dedifferentiated
components
.
The
diagnosis
was
confirmed
by
demonstration
of
CPM
gene
amplification
by
fluorescence
in
situ
hybridization
(
FISH
)
.
