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Zorluk: Çok zorHematology and Oncology

A 68-year-old man with a history of castration-resistant metastatic prostate cancer is brought to the emergency department by his family. He reports a 5-day history of progressively worsening, severe thoracic back pain that is exacerbated by coughing and laying flat. Over the past 12 hours, he has developed profound weakness in both legs and an inability to urinate. His temperature is 37.2°C (99.0°F), blood pressure is 142/86 mmHg, and pulse is 92/min. Neurological examination reveals 2/5 motor strength in the bilateral lower extremities, decreased pinprick sensation below the umbilicus, and absent patellar and Achilles reflexes. Anal sphincter tone is markedly diminished. Post-void residual bladder volume is 600 mL.

Arrange the following management steps in the most appropriate chronological sequence for this patient:

  1. 1Administer high-dose intravenous dexamethasone
  2. 2Obtain an urgent magnetic resonance imaging (MRI) of the entire spine
  3. 3Review imaging findings with neurosurgery and radiation oncology
  4. 4Initiate definitive surgical decompression or external beam radiotherapy

Cevap

The correct chronological sequence is: 1) Administer high-dose intravenous dexamethasone, 2) Obtain an urgent MRI of the entire spine, 3) Review imaging findings with neurosurgery and radiation oncology, 4) Initiate definitive surgical decompression or external beam radiotherapy.
The correct sequence for managing suspected malignant epidural spinal cord compression (MESCC) with neurological deficits begins with immediate medical stabilization to preserve nerve function, followed by diagnostic imaging, and finally definitive therapy. When a patient presents with back pain and overt neurological deficits (such as paraparesis, a sensory level, and bowel/bladder dysfunction), the absolute first step is the administration of high-dose intravenous dexamethasone. This intervention reduces peritumoral vasogenic edema and immediately decreases pressure on the spinal cord. Once steroids are empirically administered, an urgent MRI of the entire spine is obtained to confirm the diagnosis and assess for multiple lesions. After the lesion is radiographically defined, multidisciplinary consultation with neurosurgery and radiation oncology is required to formulate a treatment plan. Finally, definitive treatment is executed, which involves surgical decompression or external beam radiotherapy depending on spinal stability and tumor histology.

Adım Adım Çözüm

1
Recognize the clinical syndrome of an oncologic emergency.
The patient has malignant epidural spinal cord compression (MESCC) with active neurologic deficits (paraparesis, sensory level, urinary retention).
History of metastatic prostate cancer combined with progressive back pain and rapidly evolving myelopathy is the classic presentation of MESCC.
2
Determine the most urgent initial therapeutic intervention.
Administer high-dose intravenous dexamethasone immediately.
Corticosteroids rapidly reduce peritumoral vasogenic edema and decrease pressure on the spinal cord. They must be given immediately to prevent permanent paralysis before any diagnostic imaging delays.
3
Identify the confirmatory diagnostic test.
Obtain an urgent MRI of the entire spine.
MRI is the gold standard to localize the compression. The entire spine must be imaged because up to 30% of these patients have multiple concurrent asymptomatic epidural metastases.
4
Formulate a definitive treatment plan.
Consult specialists, then proceed with surgery or radiation.
Once the anatomy is defined on MRI, a multidisciplinary team determines if the patient is best suited for surgical decompression or targeted external beam radiotherapy.

Anahtar Kavram

In patients with suspected malignant epidural spinal cord compression presenting with neurological deficits, systemic glucocorticoids must be administered immediately prior to confirmatory imaging to preserve neurologic function.
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Hematology and Oncology

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