All procedures in this study involving human participants were performed in accordance with the 1964 Helsinki Declaration and its later amendments. Etik Kurul Onayı: Etik kurul onayı İstanbul Yeni Yüzyıl Üniversitesi, Fen Bilimleri, Sosyal ve Girişimsel Olmayan Sağlık Bilimleri Araştırmaları Etik Kurulu'ndan (Sayı: 2020/04-05) alınmıştır. İnsan katılımcıların katıldığı çalışmalardaki tüm prosedürler, 1964 Helsinki Deklarasyonu ve daha sonra yapılan değişiklikler uyarınca gerçekleştirilmiştir.
Background Ifosfamide (IFO) is an alkylating agent used to treat broad range of malignancies. One of the life-threatening toxic effects is reversible neurotoxicity. In this report; we presented a case report of ifosfamide induced encephalopathy (IIE) in a child with osteosarcoma in order to emphize that it is important to continue ifosfamide treatment as well as the importance of this potentially fatal complication. Case report Following the 20th week of ifosfamide treatment, the patient's follow-up with the diagnosis of osteosarcoma developed neurological findings. Laboratory analyzes before and after ifosfamide infusion were normal. No pathological findings were seen on MR imaging. Hypoglycemia, electrolyte disturbances, encephalitis, meningitis, metastasis and posterior reversible encephalopathy syndrome (PRES) were not considered. Electroencephalography was found compatible with neuronal hyperexcitability originating from the left hemisphere. With the diagnosis of ifosfamide induced encephalopathy, prophylaxis with methylene blue was received before the next infusion of ifosfamide. Neurological findings were not observed in the patient's follow-up. Conclusion Patients who develop IIE can continue their treatment protocol with methylene blue prophylaxis and supportive therapy.
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