Purpose Of Review: Central nervous system (CNS) lymphomas (CNSLs) have varied clinical presentations which can mimic neuroinflammatory disease, leading to a diagnostic dilemma for clinicians.
Recent Findings: This report describes two patients who initially received a diagnosis of neuroinflammatory disorders but were refractory to treatment over a protracted time course. In both cases, biopsy revealed diffuse large B cell lymphoma (DLBCL) as the final diagnosis.