Case Presentation: 26-year-old man diagnosed with T-cell acute lymphoblastic leukemia (T-ALL) with CNS involvement in July 2022 completed one cycle of hyperCVAD B and subsequently received maintenance therapy with POMP (prednisone, vincristine, methotrexate, and mercaptopurine) starting in 2023, along with intrathecal chemotherapy. The patient achieved complete remission, with serial MRIs, PET scans, and bone marrow [...]