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Long term survival in a case of concurrent retroperitoneal liposarcoma and renal cell carcinoma: a case report.
[liposarcoma]
Liposarcoma
is
one
of
the
most
common
soft
tissue
sarcomas
found
in
adults
.
It
has
a
predilection
for
retroperitoneal
space
.
Renal
cell
carcinoma
is
the
most
common
tumor
of
the
kidney
.
Concurrent
retroperitoneal
liposarcoma
and
renal
cell
carcinoma
were
found
in
a
34
-
year
-old
Japanese
man
.
The
renal
tumor
was
first
detected
by
ultrasonography
,
it
was
confirmed
by
computed
tomography
,
which
also
identified
a
presumptive
retroperitoneal
liposarcoma
,
and
the
tumors
were
further
assessed
with
magnetic
resonance
imaging
.
The
patient
was
treated
by
surgical
resection
of
retroperitoneal
liposarcoma
and
left
nephrectomy
and
has
been
disease-free
for
10
years
.
The
concomitant
occurrence
of
a
renal
tumor
and
a
primary
primary
liposarcoma
is
rare
.
The
major
factors
promoting
a
good
prognosis
in
this
case
were
the
favorable
histology
and
the
small
size
of
the
tumors
.
