CTICasesExtramedullary Granulocytic Sarcoma (Leukemia Recurrence)
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Imaging findings
A 30s male with a history of acute myelogenous leukemia (AML) presents with increased opacity of the left hemithorax, obscured descending aortic/left paravertebral stripes, and subtle left rib convexity on chest radiograph. CT reveals a large mass in the left paraspinal musculature, extending into the extrapleural space and insinuating along the aorta, displacing the spinal cord to the right. An MRI confirmed spinal cord displacement.
Key takeaways
This case represents an extramedullary recurrence of leukemia, specifically a granulocytic sarcoma. These soft tissue masses, often found in paraspinal locations, can cause subtle radiographic changes and more overt CT findings including mass effect on adjacent structures like the spinal cord. Recognition of these findings in a patient with a history of leukemia is crucial for prompt diagnosis and management.
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