Aggressive Brainstem Glioblastoma in a 9-Year-Old Child with Neck Node Metastases: A Case Report and Review of Literature.

Glioblastoma multiforme (GBM) is the most aggressive intracranial tumor and diffusely infiltrates the surrounding brain tissue. Despite their malignant nature, extraneural metastases from glioblastomas are rare with an estimated incidence of <2%. We present a case of a 9-year-old boy with exophytic brainstem GBM who developed cervical node metastases. He had undergone gross total excision of GBM in January 2017. Histopathological examination confirmed the diagnosis of glioblastoma multiforme. The patient underwent chemotherapy and radiotherapy as per hospital protocol. He developed hydrocephalus after 3 months, which required ventriculoperitoneal shunt. Two more months later, he developed drowsiness and was found to have shunt dysfunction causing hydrocephalus and multiple enlarged cervical lymph nodes. Cerebrospinal fluid diversion and neck node biopsy were performed for the patient but he died. The histopathological examination of the neck node biopsy revealed metastases from glioblastoma. We report this case to create awareness regarding possibility of extraneural metastases even in pediatric brainstem glioblastoma. [ABSTRACT FROM AUTHOR]