Longitudinal myelitis in systemic lupus erythematosus: a paediatric case
Transcript of Longitudinal myelitis in systemic lupus erythematosus: a paediatric case
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LETTER TO THE EDITOR
Longitudinal myelitis in systemic lupus erythematosus:a paediatric case
Andrea Campana • Paola Sabrina Buonuomo •
Antonella Insalaco • Claudia Bracaglia • Matteo Di Capua •
Elisabetta Cortis • Alberto G. Ugazio
Accepted: 17 May 2009 / Published online: 27 July 2011
� Springer-Verlag 2011
Abstract Acute transverse myelitis (ATM) is a very rare
manifestation of the central nervous system in systemic
lupus erythematosus (SLE), especially in case of involve-
ment of continuous segments (longitudinal myelitis). We
describe a 12-year-old female with lupus correlated with
transverse myelitis with a longitudinal involvement of the
spinal cord (D2 to D10) at the onset of the disease. Despite
the administration of an early aggressive therapy, the out-
come proved to be unfavourable. After 2 years of follow-
up, the child still complains of paraplegia, sphincter
incontinency and ipo-paresthesias of both legs.
Keywords Acute transverse myelitis (ATM) � Systemic
lupus erythematosus (SLE)
Dear editor,
SLE is a multisystemic disease that can affect any organ
and system in the body. Central nervous system (CNS)
involvement constitutes the second most common cause of
death after renal failure and is also a leading cause of
morbidity in patients with SLE. ATM is a serious and rare
CNS manifestation of SLE that usually involves one to four
segments of the thoracic or cervical spinal cord [1–3].
Myelitis may present at the onset of SLE, but more
often, it occurs during the disease course. It was proposed
to name ‘‘longitudinal myelitis’’ when many and continu-
ous segments are involved. The onset is acute and char-
acterized by severe low back pain, sphincter dysfunction,
paraparesis and sensory-level paresthesias. The prognosis
is generally poor since it can generate a prolonged paralysis
or even death.
We describe the clinical and neurological features of a
paediatric patient with longitudinal involvement of nine
spinal segments (D2 to D10) on the onset of SLE. SLE has
been diagnosed in a 12-year-old Caucasian girl that
developed a rapid onset of paraplegia. Two years before,
she had been diagnosed with mild thrombocytopenia
(40,000 per mm3). Until her admission, the number of
platelet was 80,000–1,000,000 per mm3. Some days before
the admission, she developed fever, headache, arthralgias,
abdominal pain, diarrhoea and vomiting. At admission, she
presented malar rash, mild dehydration, abdominal pain
and fever (40�C). Laboratory examinations showed a white
blood cell count of 3,800 per mm3, haemoglobin 13.4 gr/dl,
58,000 per mm3 platelets, PCR 0.62 mg/dl, erythrocyte
sedimentation rate 48 mm/h, anti-dsDNA 1:320 U/ml, C3
61 mg/dl; C4 8 mg/dl and ANA 1:640. Lupus coagulant
and anticardiolipin antibody were negative. The next day,
her general conditions worsened, fever persisted, and she
developed severe low back pain and acute urinary reten-
tion; in the following hours, she presented rapidly evolving
weakness and numbness of both legs with absent knee and
ankle reflex that within a few hours evolved into a com-
plete paralysis. The cerebrospinal fluid analysis showed no
pleocytosis and normal values of protein and glucose.
Urinalysis, blood and cerebrospinal fluid culture were
unremarkable. The spinal cord MRI showed an increased
signal in correspondence with T2, typical of transverse
A. Campana � P. S. Buonuomo (&) � A. Insalaco �C. Bracaglia � E. Cortis � A. G. Ugazio
Department of Medicine, Division of Rheumatology,
Bambino Gesu Children’s Hospital, Rome, Italy
e-mail: [email protected]
M. D. Capua
Department of Child Neuropsychiatry, Bambino Gesu Children’s
Hospital, Rome, Italy
123
Rheumatol Int (2012) 32:2587–2588
DOI 10.1007/s00296-011-2061-1
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myelitis with longitudinal involvement of the spinal cord
from D1 to D10. The somatosensory evoked potentials
after tibial nerve stimulation showed a normal spinal cord
response at T12 level but the absence of a cortical poten-
tial. This is suggestive for a lesion of the central somato-
sensory pathways above the T12 spinal level. The magnetic
transcranial stimulation of the motor cortex did not produce
any muscular response from the lower limbs; instead, the
stimulation of the lumbar roots evoked a normal motor
response. This is in agreement with a lesion of the motor
pathways along the spinal cord. She was immediately
treated with high-dose corticosteroids (methylprednisolone
1 g i.v. for 3 days repeated after 1 week) and i.v. pulse
cyclophosphamide (500 mg/m2 in 2 days and 750 mg/m2
monthly for the following 6 months). Subsequently,
oral methylprednisolone was continued at 2 mg/kg/day.
Although the treatment reduced the symptoms, the patient
still complained of sensory and strength deficit in both legs
with knee and ankle reflexes absent bilaterally. A second
MRI performed after 1 month showed a D6 segmental
atrophy with a marked signal alteration from D2 to D10,
suggesting myelomalacia. After 2 years of follow-up, the
patient has not active disease, but no neurological
improvement occurred, persisting sphincter incontinency
and paraplegia.
Discussion
ATM is a rare manifestation of SLE and generally has a
poor prognosis. It has been demonstrated that its evolution
is influenced by factors such as the rapidity of diagnosis,
the extent of involvement and a prompt treatment [4, 5]. If
the infectious aetiology is unlikely, several mechanisms
have been suggested such as vascular injuries secondary to
immune-complex-mediated vasculitis, hypercoagulability
from aPL or non-vascular injuries caused by antineuronal
antibodies and white matter degeneration. Several reports
indicate that there is a significant association between
transverse myelopathy and the presence of antiphospho-
lipid antibodies [5]. The differential diagnosis of transverse
myelopathy [6] in patients with SLE includes the follow-
ing: acute transverse myelitis, viral infection, medullar
compression due to vertebral fractures, epidural or subdural
lipomatosis, epidural and/or paraspinal abscess, compli-
cating disc space infection and atlantoaxial subluxation.
MRI is the radiological investigation of choice in the
management to detect transverse myelitis correlated with
lupus [7, 8].
The prognosis is generally poor and is related to factors
such as diagnosis rapidity, extension of the lesion and
prompt treatment. Treatment with high-dose corticoste-
roids and pulse cyclophosphamide has been adopted by
most authors in recent years [9]. Because of the rarity of
lupus transverse myelitis, no double-blind central studies
are available to compare the efficacy of pulse cyclophos-
phamide with that of high-dose i.v. corticosteroids.
Although some satisfactory responses and outcomes have
been reported, our clinical report underlines how prognosis
remains inauspicious, in spite of prompt recognition and
early aggressive therapy, attributable to the rapid evolution
and degree of spinal cord involvement.
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