Acute unilateral oculomotor nerve palsy revealing a primary central nervous system lymphoma in an immunocompetent patient

Abstract

Primary central nervous system lymphoma (PCNSL) is a rare (5% of PCNS tumors) and aggressive extranodal non-Hodgkin lymphoma arising within the brain, eyes, leptomeninges, or spinal cord in the absence of systemic lymphoma at the time of diagnosis.