Extramedullary tumors and leukemia
Graff–Radford J et al. – Extramedullary myeloid tumor (EMT) affecting the nervous system can present in patients without a known hematologic disorder and is often not recognized. Thoracic paraspinal masses are the most common presentation. The prognosis for patients with neurologic presentation of EMT is generally poor, but longer survival is possible in patients presenting with isolated EMT or leukemia first diagnosed at the time of EMT presentation.