Gliomas usually metastasize to other areas of the skull, but rarely to areas outside the skull. Gliomas belong to a group of intracranial tumors originating from glial cells and are common primary intracranial tumors. According to clinical studies, gliomas rarely metastasize to areas outside the skull by bloodstream or other routes. However, gliomas can metastasize to other areas of the skull, primarily by spreading with the meninges or cerebrospinal fluid. Often called implantation metastasis, gliomas can metastasize to the cerebellar vermis, lateral ventricles, and brainstem within the skull. The development of gliomas may be genetically and environmentally related, such as heredity, ionizing radiation, and viral infections, and the main symptoms include nausea and vomiting, headaches, blurred vision, and seizures. The disease has a poor prognosis, is difficult to cure, is prone to recurrence, and progresses at a rapid rate. All in all, when you are detected with glioma, you need to go to the hospital in time and cooperate with the doctor for active treatment, so as to avoid delaying your condition.