Primary spinal epidural lymphoma (PSEL) is a subset of lymphomas, where there are no other recognizable sites
of lymphomas at the time of diagnosis. The incidence of this subset of lymphomas is much less. It, however, is increasingly diagnosed, due to the increased use of more sensitive imaging modalities.
Review article is now published with me as one of the contributors: Cugati G, Singh M, Pande A, Ramamurthi R, Balasubramanyam M, Sethi SK, et al. Primary spinal epidural lymphomas. J Craniovert Jun Spine 2011;2:3-11. Full free text is available.