Solitary Primary Central Nervous System Plasmablastic Lymphoma in a Young Immunocompetent Female: Report on an Extremely Rare Entity with Review of Literature

Primary central nervous system (CNS) plasmablastic lymphoma (PBL) in immunocompetent patients is an extremely rare disease, and only three cases had been reported till date. We present a case of a young female of age 21 years immunocompetent human immunodeficiency virus (HIV) and Epstein–Barr virus (EBV) negative, presented to us with left frontal lesion with weakness of the right upper and lower limbs for 9 months. Magnetic resonance images showed ring-enhancing lesions resembling a cavernoma or tuberculoma. Histopathological diagnosis was PBL. Surgical excision of tumor, followed by rapid recurrence with bleed in 3-month duration, was treated by adjuvant chemoradiotherapy. We report a young immunocompetent, HIV-negative, and EBV-negative female, with rapidly progressive primary CNS solitary PBL in the posterior frontal region, developed rapid recurrence of the tumor twice despite gross total excision.