Adult hippocampal ganglioneuroblastoma: Case report and literature review

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Rationale:Intracranial ganglioneuroblastoma represents a rare subtype of primitive neuroectodermal tumor. Here, we report a hippocampal ganglioneuroblastoma and a literature review of cerebral anglioneuroblastoma is carried out.Patient concerns:We report a 16-year-old male patient presenting with absence seizure and high-infiltration hippocampal ganglioneuroblastoma.Interventions:Magnetic resonance imaging (MRI) indicates a space-occupying lesion with a well-defined margin in the right temporal lobe and hippocampus. However, hyper-signal on flair and diffusion-weighted imaging (DWI) with a low apparent diffusion coefficient (ADC) value is detected, which prompts high tumoral invasiveness.Interventions:A total resection of tumor and subsequent chemotherapy combing with radiotherapy is performed.Outcomes:For a follow-up period of 60 months, no evidence of recurrence and further seizures are detected.Lessons:High-infiltration hippocampal ganglioneuroblastoma is a rare event. MRI examination often showed features of low-grade gliomas, while hyper-signal lesion on DWI with a low ADC value can be detected. Complete resection combined with fractionated radiotherapy and chemotherapy was the optimal treatment for cerebral ganglioneuroblastoma.

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