Rare Diseases Symptoms Automatic Extraction
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Focal myositis presenting with radial nerve palsy.
[focal myositis]
Focal
myositis
is
a
rare
inflammatory
pseudotumor
of
skeletal
muscle
which
usually
has
a
benign
course
.
We
report
a
56
-
year
-old
woman
with
a
painful
mass
in
the
left
arm
with
a
radial
nerve
palsy
.
Magnetic
resonance
imaging
(
MRI
)
of
the
left
arm
showed
a
mass
in
the
triceps
muscle
that
was
suggestive
of
a
soft
-tissue
sarcoma
.
Electromyography
showed
a
severe
radial
neuropathy
involving
both
motor
and
sensory
axons
.
An
open
biopsy
showed
focal
myositis
.
Treatment
with
corticosteroids
resulted
in
complete
disappearance
of
the
mass
clinically
and
by
MRI
,
without
recurrence
for
more
than
2
years
.
Radial
nerve
function
also
recovered
completely
.
As
a
treatable
cause
of
focal
neuropathy
,
focal
myositis
should
be
included
in
the
differential
diagnosis
of
a
muscle
mass
.
Diseases
Validation
Diseases presenting
"skeletal muscle"
symptom
cadasil
epidermolysis bullosa simplex
esophageal adenocarcinoma
focal myositis
hereditary cerebral hemorrhage with amyloidosis
inclusion body myositis
lamellar ichthyosis
neuralgic amyotrophy
pleomorphic liposarcoma
pyomyositis
pyruvate dehydrogenase deficiency
systemic capillary leak syndrome
well-differentiated liposarcoma
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