Epidural steroid injections are interventional pain
procedures often used to treat lumbar radicular
pain. The most serious complication of this procedure
is the formation of a spinal epidural hematoma,
which can result in profound permanent
neurologic deficits if left untreated.
A 76-year-old woman with mild lumbar spinal
stenosis (L4-L5, L5-S1) and lumbar dextroscoliosis,
previously on 81mg of aspirin daily (discontinued
at 14 days prior to procedure) and
not on anticoagulation therapy, underwent
a lumbar epidural steroid injection (T12-L1).
Post-procedurally, she developed bilateral leg
paralysis. A magnetic resonance imaging (MRI)
study revealed a fluid collection concerning for
hematoma. Neurosurgery was consulted, but at
the time of evaluation, she had near resolution of
her presenting symptoms and the decision was
made to monitor her for 48 hours. Three months
after discharge, MRI revealed no persistent
symptoms or radiographic evidence of sequelae
from epidural hematoma.
The frequency of spinal epidural hematomas
after epidural steroid injections is unknown. This
patient did not have traditional risk factors of severe
spinal stenosis or the use of anticoagulant or
antiplatelet agents. A radiographic fluid collection
was seen, which may represent blood or persistent
injectate. A formal surgical diagnosis was not obtained,
as her symptoms spontaneously improved
without further need for intervention.
We report the first case of presumed persistent
injectate compression of the lumbar spinal cord,
resulting in bilateral lower extremity weakness in
a patient with dextroscoliosis, mimicking spinal
epidural hematoma with spontaneous resolution
without intervention.
Key words: Epidural steroid injection, spinal epidural
hematoma, dextroscoliosis, lumbar radiculopathy,
spinal stenosis, lower extremity paralysis