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Difficulty: MediumHematology and Oncology

A 54-year-old woman with a history of hormone receptor-positive metastatic breast cancer presents to the emergency department with a 2-day history of progressively worsening mid-back pain. Over the past 12 hours, she has developed difficulty walking due to bilateral leg weakness and reports a new onset of urinary incontinence. Physical examination reveals 3/5 muscle strength in the lower extremities bilaterally, exaggerated patellar and Achilles deep tendon reflexes, and decreased sensation to pinprick below the level of the nipples. Vital signs are within normal limits. Arrange the following steps in the most appropriate sequential order for the immediate evaluation and management of this patient's current condition.

  1. 1Administration of high-dose intravenous dexamethasone
  2. 2Magnetic resonance imaging (MRI) of the entire spine
  3. 3Consultation with neurosurgery or radiation oncology
  4. 4Initiation of targeted decompressive therapy

Answer

The correct sequence is: Administration of high-dose intravenous dexamethasone, followed by Magnetic resonance imaging (MRI) of the entire spine, then Consultation with neurosurgery or radiation oncology, and finally Initiation of targeted decompressive therapy.
Malignant spinal cord compression is an oncologic emergency. The immediate priority is preserving neurologic function by reducing vasogenic edema with high-dose intravenous corticosteroids (e.g., dexamethasone). This must be done empirically as soon as the condition is suspected, even before diagnostic imaging. After steroids are given, an MRI of the entire spine is obtained to confirm the diagnosis and assess the extent of the disease. Following imaging, surgical and/or radiation oncology consultation is obtained to plan and initiate definitive decompressive therapy.

Step-by-Step Solution

1
Administer high-dose intravenous dexamethasone.
Decreases peritumoral vasogenic edema and relieves pressure on the spinal cord.
Neurologic deficits in malignant spinal cord compression can become irreversible quickly. Steroids are the most critical initial step and must be given before waiting for imaging.
2
Perform an MRI of the entire spine.
Visualizes the epidural metastasis and determines the level of compression.
MRI is the imaging modality of choice to confirm the diagnosis and delineate the extent of the disease.
3
Consult specialized services (neurosurgery or radiation oncology).
Establishes a definitive treatment plan based on imaging findings.
Expert evaluation is necessary to weigh the benefits of surgery versus radiation based on spinal stability, tumor radiosensitivity, and overall prognosis.
4
Initiate definitive decompressive therapy.
Provides long-term relief of cord compression and local tumor control.
This is the final intervention in the acute management pathway to prevent permanent paralysis.

Key Concept

In patients with suspected malignant spinal cord compression presenting with neurologic deficits, intravenous corticosteroids must be administered immediately prior to diagnostic imaging to prevent irreversible neurologic damage.
Estimated Time:1m 30s
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Topics

Hematology and Oncology

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