Diagnostic Value of [¹⁸F]FDG PET/CT in Immunotherapy-Related Meningoencephalitis: A Paediatric Case Report (EANM 2026) - Sep 29, 2026 - Abstract #EP-1499; "Materials and We report the case of a 15-year-old boy diagnosed with classical Hodgkin lymphoma undergoing second-line chemotherapy with brentuximab and nivolumab, who presented to the emergency department with headache and vomiting. This case highlights the complementary role of [¹⁸F]FDG PET/CT in the evaluation of indeterminate MRI findings in neuro-oncological patients. In line with existing literature, [18F]FDG PET/CT may detect and characterize metabolic alterations associated with immune-related neurotoxicity, supporting the differential diagnosis and contributing to treatment response assessment. Its integration into the diagnostic pathway may enhance clinical decision-making in complex cases."
Case report • Clinical • FDG PET • Classical Hodgkin Lymphoma • CNS Disorders • Hematological Malignancies • Hodgkin Lymphoma • Infectious Disease • Lymphoma • Pediatrics
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D. Silva; N. Vasconcelos; R. Marão; R. Lopes; I. Lopo; I. Próspero; J. P. Teixeira; H. Duarte; I. L. Sampaio
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