“…In pediatrics, less is known regarding prognosis; however, outcomes in recent series are similar to that of systemic NHL with CNS disease with 3-year overall survival (OS) of 62% to 83%. 3,5,7,8,10 Role of surgical resection PCNSL is a diffuse and often multifocal disease. In both children and adults, the role of surgery is generally restricted to biopsy for diagnostic purposes or, in rare cases, emergent debulking to relieve impending brain herniation.…”