Extramedullary hematopoiesis and spinal cord compression complicating polycythemia rubra vera.
Rice GP., Assis LJ., Barr RM., Ebers GC.
A 68-year-old man with polycythemia rubra vera developed gradually progressive paraparesis followed by an acute, painless paraplegia. Extradural thoracic spinal cord compression was found to be secondary to extramedullary hematopoiesis (EH). The neurological complications of EH are reviewed.