EM SAQs · Spinal cord compression
Malignant spinal cord compression — steroids, MRI and 24-hour window
ACEM SAQ on MSCC: dexamethasone dosing, whole-spine MRI, Patchell surgery vs RT, ambulatory prognosis.
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Recognition. Known cancer + progressive nocturnal back pain + new bilateral upper-motor weakness = malignant spinal cord compression until MRI proves otherwise. Ambulatory status at presentation predicts outcome — he is already losing independent gait; the clock to irreversible cord injury is measured in hours.[3]
Bedside assessment. Motor MRC grades all myotomes; reflexes/Babinski; sensory level; DRE (anal tone, perianal sensation); bladder scan for retention; document ASIA baseline; spinal precautions if cervical concern.[3]
Immediate drugs. Dexamethasone 10 mg IV now (do not wait for MRI if suspicion high), then 4 mg every 6 hours. Analgesia (e.g. morphine 5 mg IV titrated). Catheterise if retention. VTE prophylaxis plan. Avoid hypotension.[3]
Imaging. Urgent MRI whole spine with gadolinium within 4–6 hours — not single-level only (skip lesions). Bilsky ESCC grade communicates cord compromise.[2] CT for bony detail/surgical planning as adjunct.
Definitive pathway. Parallel referral neurosurgery + radiation oncology. For single-level MSCC in a fit patient with reasonable survival, direct decompressive surgery plus radiotherapy is superior to RT alone for maintaining ambulation (Patchell 2005).[1] Radiosensitive multi-level disease or poor surgical candidate may receive RT alone. Target definitive treatment within ~24 hours.
References3ShowHide
- [1]Patchell RA, Tibbs PA, Regine WF, et al. Direct decompressive surgical resection in the treatment of spinal cord compression caused by metastatic cancer: a randomised trial. Lancet, 2005.PMID 16112300
- [2]Bilsky MH, Laufer I, Fourney DR, et al. Reliability analysis of the epidural spinal cord compression scale. J Neurosurg Spine, 2010.PMID 20809724
- [3]Singer E, et al. Initial management and disposition of metastatic spinal cord compression in the emergency department: a review of the literature. Ann Med, 2025.PMID 41033840