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Children with acute lymphoblastic leukemia, receiving intrathecal methotrexate (IT-MTX), develop acute and subacute neurological dysfunction in 3-15% of cases. Altered level of consciousness, seizure, and stroke-like manifestations are among the most common presentations. MRI of the brain in an early stage is consistent with white matter leukoencephalopathy. There are no specific guidelines for the treatment of such a syndrome. An elevated cerebrospinal fluid (csf) adenosine concentration causes vasodilatation in the brain and leads to cerebral ischemia, which may be reduced by aminophylline infusion. The study is a retrospective data analysis in which electronic data records of 30 patients, collected from September 2017 - August 2019. The primary objective of the study was to evaluate the safety and efficacy of aminophylline in IT-MTX induced neurotoxicity. Aminophylline infusion was used in 30 patients with IT-MTX neurotoxicity. Twenty-five patients (83.33%) showed dramatic improvement of neurologic signs and symptoms within 48 hours. Aminophylline was, hence, coined as a salvageable therapy. No noticeable side effects were observed during treatment with aminophylline infusion. Key Words: Intrathecal methotrexate, Neurotoxicity, Children, Cancer, Aminophylline.

Safety and Efficacy of Aminophylline in Intrathecal Methotrexate-related Neurological Toxicity in Large Pediatric Oncology Centre