Incidence and Characterization of Secondary CNS Lymphoma in 1,972 Patients with DLBCL - A Danish Nationwide Cohort Study.

Secondary CNS involvement (SCNSL) is a rare manifestation of diffuse large B-cell lymphoma (DLBCL) with a poor prognosis. We present updated data from a nationwide study on the incidence and clinical characteristics of SCNSL. The incidence of SCNSL was calculated considering death or relapse without SCNSL as competing risks.