Rituximab, Methotrexate, and Tepadina Induction Followed by Etoposide and Cytarabine Consolidation in Primary Central Nervous System Lymphoma

"Pre-induction Therapy (R-M regimen):~Cycle 1-2 (C1-C2):~Rituximab (R): 375 mg/m² IV, on Day 1 Methotrexate (MTX): 3.5 g/m² IV over 3 hours, on Day 2~Induction Therapy (R-MT regimen):~Cycle 3-6 (C3-C6):~Rituximab (R): 375 mg/m² IV, on Day 1 Methotrexate (MTX): 3.5 g/m² IV over 3 hours, on Day 2 Thiotepa (T): 30 mg/m² IV over 30 minutes, on Day 3~Consolidation Therapy (EA regimen):~Cycle 7-8 (C7-C8):~Etoposide (E): 5 mg/kg IV, every 12 hours on Days 1 and 2 Cytarabine (A): 2.0 g/m² IV over 2 hours, every 12 hours on Days 3 and 4"