TY - JOUR T1 - Delayed reversible methotrexate-induced leucoencephalopathy in a four-year-old child with acute lymphoblastic leukemia A1 - Amrita Roy A1 - Neelakshi Ghosh A1 - Aramita Saha A1 - Somenath Chatterjee JF - Clinical Cancer Investigation Journal JO - Clin Cancer Investig J SN - 2278-0513 Y1 - 2013 VL - 2 IS - 2 DO - 10.4103/2278-0513.113642 SP - 160 EP - 162 N2 - Intravenous/intrathecal methotrexate (MTX) has been implicated as a major cause of treatment-related neurotoxicity particularly leukoencephalopathy in children with hematological malignancy. We report a 4-year-old boy who presented with apathy and aphasia for 1 day while on the maintenance-phase chemotherapy according to MCP 841 protocol. MRI of brain revealed bilateral symmetrical FLAIR hyperintensities in caudate and putaminal region with FLAIR hypersignal in subcortical U-fiber in left frontal lobe consistent with MTX-induced toxic leucoencephalopathy. There was spontaneous resolution of symptoms within 1 week of onset. So, in Pre-B acute lymphoblastic leukemia patients with subtle neurological deficit, this diagnosis should be kept in mind and further treatment with MTX should be carefully decided. UR - https://ccij-online.org/article/delayed-reversible-methotrexate-induced-leucoencephalopathy-in-a-four-year-old-child-with-acute-lymphoblastic-leukemia-105 ER -