“…Children at higher risk for cognitive sequelae include those younger than 6 to 8 years, particularly girls (Butler, Rizzi, & Bandilla, 1999;Gamis & Nesbit, 1991;Leung et al, 2000;Palmer et al, 2001;Ris, Packer, Goldwein, Jones-Wallace, & Boyett, 2001); those who received central nervous system radiation (Gamis & Nesbit, 1991;Lockwood, Bell, & Colegrove, 1999); and those with a combination of these 2 factors. In addition, children receiving concurrent intrathecal methotrexate or high-dose intravenous methotrexate and those with computerized axial tomography scan abnormalities have additional risk factors for cognitive sequelae (Gamis & Nesbit, 1991).…”