Extramedullary hematopoiesis causing spinal cord compression.
D006410:Hematopoiesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D009192:Myelography; D013115:Spinal Canal; D013117:Spinal Cord Compression / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery