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Clinical, Electrophysiological Findings in Adult Patients with Non-traumatic Plexopathies.
[neuralgic amyotrophy]
To
ascertain
the
etiology
of
non-traumatic
plexopathy
and
clarify
the
clinical
,
electrophysiological
characteristics
according
to
its
etiology
.
We
performed
a
retrospective
analysis
of
63
non-traumatic
plexopathy
patients
that
had
been
diagnosed
by
nerve
conduction
studies
(
NCS
)
and
needle
electromyography
(
EMG
)
.
Clinical
,
electrophysiological
,
imaging
findings
were
obtained
from
medical
records
.
We
identified
36
cases
with
brachial
plexopathy
(
BP
)
and
27
cases
with
lumbosacral
plexopathy
(
LSP
)
.
The
causes
of
plexopathy
were
neoplastic
(
36
.
1
%
)
,
thoracic
outlet
syndrome
(
TOS
)
(
25
.
0
%
)
,
radiation
induced
(
16
.
7
%
)
,
neuralgic
amyotrophy
(
8
.
3
%
)
,
perioperative
(
5
.
6
%
)
,
unknown
(
8
.
3
%
)
in
BP
,
while
neoplastic
(
59
.
3
%
)
,
radiation
induced
(
22
.
2
%
)
,
neuralgic
amyotrophy
(
7
.
4
%
)
,
psoas
muscle
abscess
(
3
.
7
%
)
,
and
unknown
(
7
.
4
%
)
in
LSP
.
In
neoplastic
plexopathy
,
pain
presented
as
the
first
symptom
in
most
patients
(
82
.
8
%
)
,
with
the
lower
trunk
of
the
brachial
plexus
predominantly
involved
.
In
radiation
induced
plexopathy
(
RIP
)
,
pain
was
a
common
initial
symptom
,
but
the
proportion
was
smaller
(
50
%
)
,
and
predominant
involvements
of
bilateral
lumbosacral
plexus
and
whole
trunk
of
brachial
or
lumbosacral
plexus
were
characteristic
.
Myokymic
discharges
were
noted
in
41
.
7
%
patients
with
RIP
.
Abnormal
NCS
finding
in
the
medial
antebrachial
cutaneous
nerve
was
the
most
sensitive
to
diagnose
TOS
.
Neuralgic
amyotrophy
of
the
brachial
plexus
showed
upper
trunk
involvement
in
all
cases
.
By
integrating
anatomic
,
pathophysiologic
knowledge
with
detailed
clinical
assessment
and
the
results
of
ancillary
studies
,
physicians
can
make
an
accurate
diagnosis
and
prognosis
.
Diseases
Validation
Diseases presenting
"pain"
symptom
achondroplasia
acute rheumatic fever
adrenal incidentaloma
adrenomyeloneuropathy
aniridia
aromatase deficiency
carcinoma of the gallbladder
cholangiocarcinoma
coats disease
congenital diaphragmatic hernia
congenital toxoplasmosis
cushing syndrome
cutaneous mastocytosis
cystinuria
dedifferentiated liposarcoma
dentin dysplasia
dracunculiasis
dystrophic epidermolysis bullosa
epidermolysis bullosa simplex
erdheim-chester disease
erythropoietic protoporphyria
esophageal adenocarcinoma
esophageal carcinoma
esophageal squamous cell carcinoma
fabry disease
familial mediterranean fever
focal myositis
hirschsprung disease
hodgkin lymphoma, classical
holt-oram syndrome
junctional epidermolysis bullosa
kabuki syndrome
kindler syndrome
lamellar ichthyosis
liposarcoma
locked-in syndrome
lymphangioleiomyomatosis
malignant atrophic papulosis
neuralgic amyotrophy
oligodontia
oral submucous fibrosis
papillon-lefèvre syndrome
phenylketonuria
pleomorphic liposarcoma
primary hyperoxaluria type 1
proteus syndrome
pyomyositis
scrub typhus
sneddon syndrome
systemic capillary leak syndrome
thoracic outlet syndrome
trochlear dysplasia
typhoid
von hippel-lindau disease
waldenström macroglobulinemia
well-differentiated liposarcoma
wolf-hirschhorn syndrome
This symptom has already been validated