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Utility of F-18 FDG-PET in detecting primary aldosteronism in patients with bilateral adrenal incidentalomas.
[adrenal incidentaloma]
In
patients
with
primary
aldosteronism
who
have
bilateral
adrenal
incidentalomas
,
it
is
important
to
identify
which
adrenal
gland
is
secreting
excess
aldosterone
.
Traditionally
,
adrenal
vein
sampling
(
AVS
)
has
been
performed
for
lateralization
despite
its
invasiveness
.
Here
we
report
a
case
of
bilateral
adrenal
incidentaloma
in
which
18
-
Fluorodeoxyglucose
(
FDG
)
-
positron
emission
tomography
(
PET
)
was
used
to
identify
the
functional
adrenal
mass
.
A
53
-
yr
-old
man
was
referred
to
our
clinic
due
to
bilateral
adrenal
incidentalomas
(
right
:
1
cm
,
left
:
2
.
5
cm
)
on
computed
tomography
(
CT
)
.
Given
his
history
of
colon
cancer
,
FDG-PET
/
CT
scanning
was
used
to
rule
out
metastasis
.
Although
there
was
focal
hot
uptake
lesion
in
the
right
adrenal
gland
,
the
patient
was
suspected
primary
aldosteronism
clinically
more
than
metastasis
because
of
the
patient
's
underlying
hypertension
with
hypokalemia
.
It
was
consistent
with
the
results
of
AVS
.
Based
on
these
findings
,
we
propose
that
FDG-PET
/
CT
can
be
used
instead
of
AVS
to
identify
the
source
of
primary
aldosteronism
between
two
bilateral
adrenal
incidentalomas
.
