Intracerebral Human Lymphoma - An Experimental Model.

Primary central nervous system lymphomas are rather rare, however, their frequency seems to be increasing in both high risk and immunocompetent patients with very poor prognosis. Here we describe a model intracerebrally xenotransplating human non Hodgkin lymphoma cells of B cell origin (HT 58). This offers a unique possibility to study the theraputic response, especially on systemic treatment. Briefly, one million lymphoma cells grew as meningeal tumor mass, infiltrating the brain directly as well as via the perivascular space. The lymphoma cells preserved all the phenotypic characteristics of the source tumor.