10HAMASAKI T, NODA M, KAMEI N, et al. Intradural extramedullary mass formation in spinal cord sareoidosiscase report and literature review [J], Spine, 2003,28 ( 20 ) : 420 - 423.
7Zona G, Spena G, Sbaffi PF, et al. A meningioma with islets of extram edullary myeloid metaplasia: case report[J]. Neurosurger- y,2007,61(2): E418 419.