Back pain + fever + neurologic deficit, suspected spinal epidural abscess
Recommended: MRI Entire Spine with and without contrast is the preferred imaging study for back pain + fever + neurologic deficit, suspected spinal epidural abscess. Classic triad of fever, back pain, neurologic deficit is uncommon — index of suspicion in IVDU, diabetes, recent spine procedure, bacteremia.
Recommended study
MRI Entire Spine with and without contrast
Classic triad of fever, back pain, neurologic deficit is uncommon — index of suspicion in IVDU, diabetes, recent spine procedure, bacteremia.
If the default doesn't apply
MRI contraindicated
CT
CT Myelogram + CT spine
IV contrast
Watch-outs
Surgical urgency for deficit
Neurologic deficit warrants emergent decompression — outcomes correlate inversely with delay.
Concomitant osteomyelitis / discitis
Image the entire spine — skip lesions common; concurrent discitis-osteomyelitis in most cases.
Pearls
- Most common organism: Staphylococcus aureus.
- ESR / CRP almost always elevated — normal levels argue strongly against the diagnosis.
- MRI: hypointense T1, hyperintense T2 epidural collection with peripheral enhancement.