Cervical medulloblastoma mimicking a nerve sheath tumour in a child: A rare extracranial presentation

Medulloblastoma is the most common malignant pediatric brain tumor, accounting for nearly 20% of all childhood intracranial neoplasms. It is classified as an embryonal tumor and most commonly arises in the cerebellar vermis or hemispheres of children. The 2021 World Health Organization (WHO) classification recognizes medulloblastoma as a molecularly heterogeneous entity with distinct clinical and prognostic implications.Primary extracranial or spinal medulloblastomas are exceedingly rare, with only isolated case reports and small series described in the literature. Cervical spinal presentation without intracranial disease is particularly uncommon and often leads to diagnostic confusion.