Image IQ: 25-year-old, Progressive Lower Extremity Weakness

Poll

25-year-old man presents with progressive lower extremity weakness.

A 25-year-old man presents with progressive lower extremity weakness. Thoracic spine MR image (sagittal T1W and axial T2W) is shown.

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What's your diagnosis?

Lymphoma
Multiple myeloma
Extramedullary hematopoiesis
Metastases

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