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Updated: Aug 3, 2026

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Intraoperative Ultrasound in Spinal Surgery
Published on: August 17, 2022
[Granulocytic sarcoma presenting as an epidural mass with spinal cord compression]
[Rinsho Ketsueki] the Japanese Journal of Clinical Hematology
|October 6, 2000
Summary
This case study highlights a rare instance of granulocytic sarcoma presenting before overt leukemia. The patient experienced spinal cord compression from this tumor, emphasizing the need for early diagnosis of this myeloproliferative neoplasm.
Area of Science:
- Oncology
- Hematology
- Neurology
Background:
- Granulocytic sarcoma, a rare extramedullary manifestation of myeloproliferative disorders, typically presents concurrently with or after the diagnosis of leukemia.
- Instances of granulocytic sarcoma preceding hematological malignancies are exceptionally rare, with limited documented cases.
Observation:
- A 73-year-old male presented with acute back pain and lower extremity paralysis.
- Spinal magnetic resonance imaging revealed a mass compressing the thecal sac at the Th5-6 level.
- Histopathological examination confirmed the mass as granulocytic sarcoma, characterized by myeloperoxidase positivity.
Findings:
- Despite surgical decompression, the patient developed a secondary subcutaneous granulocytic sarcoma on the chest wall.
- Both tumors demonstrated radiosensitivity.
- The patient succumbed to septic shock, underscoring the aggressive nature and potential complications of the disease.
Implications:
- This case underscores the importance of considering granulocytic sarcoma in the differential diagnosis of spinal cord compression, even in the absence of overt leukemia.
- Early recognition and diagnosis of precursor granulocytic sarcoma are crucial for timely intervention and management of potential underlying myeloproliferative disorders.
- Further research into the pathogenesis and optimal treatment strategies for precursor granulocytic sarcoma is warranted.

