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Zorluk: ZorHematology and Oncology

A 72-year-old male with a history of metastatic prostate cancer is admitted directly to the inpatient medical ward from his oncologist's clinic due to rapidly progressive lower extremity weakness. He reports a two-week history of worsening thoracic back pain that frequently awakens him from sleep. Over the last 24 hours, he has become entirely unable to stand or walk. He also mentions an inability to urinate since early this morning. Vital signs are within normal limits. Neurologic examination shows symmetric 2/5 motor strength in the lower extremities, diminished pinprick sensation below the T10 dermatome, and bilateral Babinski signs. A distended, palpable bladder is noted on abdominal examination. Complete blood count and basic metabolic panel, including serum calcium, are unremarkable.

Which of the following is the most appropriate initial step in the management of this patient?

  1. A
    Magnetic resonance imaging of the entire spine
  2. B
    Neurosurgical consultation for decompressive laminectomy
  3. Administration of intravenous dexamethasoneCevap
  4. D
    Initiation of localized external beam radiation therapy
  5. E
    Infusion of intravenous zoledronic acid

Cevap

The most appropriate initial step is the administration of intravenous dexamethasone.
The patient's presentation of progressive back pain, bilateral lower extremity weakness, sensory level deficits, upper motor neuron signs (Babinski), and autonomic dysfunction (urinary retention) in the setting of metastatic prostate cancer is highly suspicious for neoplastic epidural spinal cord compression (ESCC). ESCC is a critical neurologic emergency. The immediate priority is to reduce vasogenic edema and relieve pressure on the spinal cord to prevent irreversible ischemia and permanent paralysis. Therefore, the administration of high-dose intravenous corticosteroids (such as dexamethasone) is the most appropriate initial step. It must be given as soon as the diagnosis is suspected clinically, prior to any confirmatory imaging.

Adım Adım Çözüm

1
Evaluate the patient's clinical signs and oncologic history.
Identify severe back pain, acute motor weakness, a sensory level deficit, and autonomic dysfunction (urinary retention) in a patient with known metastatic prostate cancer.
To recognize the classic presentation of neoplastic epidural spinal cord compression (ESCC), a major oncologic emergency.
2
Formulate a management priority based on the presence of acute neurologic deficits.
Determine that the immediate priority is to relieve pressure on the spinal cord to prevent permanent ischemia and irreversible paralysis.
In ESCC, 'time is spine'; any delay in relieving vasogenic edema can result in permanent loss of neurologic function.
3
Select the most appropriate initial intervention.
Choose the administration of high-dose intravenous corticosteroids (e.g., dexamethasone).
Corticosteroids act rapidly to decrease spinal cord edema and must be given immediately upon clinical suspicion, even prior to obtaining confirmatory imaging.

Anahtar Kavram

Management sequence for neoplastic epidural spinal cord compression
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Hematology and Oncology

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