Glioblastoma Multiforme Metastasizing to Humerus and Craniospinal Axis.

Glioblastoma multiforme (GBM) is the most common malignant brain tumour. GBM metastasizing to humerus has never been reported. This is the first such case of recurrent GBM to be reported in medical literature with both extracranial and cerebrospinal dissemination. Our case amply demonstrated the need to keep vigil and high index of suspicion while interpreting the clinical and radiological findings in GBM wih a risk of CSF spread and systemic metastases.