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Neuralgic amyotrophy, diagnosed with magnetic resonance neurography in acute stage: a case report and review of the literature.
[neuralgic amyotrophy]
We
present
a
case
of
neuralgic
amyotrophy
(
NA
)
diagnosed
with
magnetic
resonance
neurography
(
MRN
)
in
the
acute
stage
.
NA
is
an
uncommon
neurologic
syndrome
that
affects
mainly
the
brachial
plexus
.
MRN
is
considered
to
be
more
sensitive
than
magnetic
resonance
imaging
(
MRI
)
for
peripheral
nervous
system
disorders
.
A
case
of
acute
NA
with
the
sudden
onset
of
shoulder
pain
and
weakness
in
the
shoulder
girdle
is
presented
.
Electrodiagnostic
testing
revealed
an
upper
trunk
lesion
.
Plexitis
that
could
not
be
demonstrated
with
conventional
MRI
was
revealed
with
MRN
.
The
left
brachial
plexus
was
thickened
and
hyperintense
with
MRN
,
consistent
with
plexitis
.
MRN
should
be
the
preferred
imaging
modality
for
the
diagnosis
of
acute
NA
.
This
might
not
only
help
early
diagnosis
and
guide
treatment
but
also
prevent
unnecessary
testing
.