Surgery can help reduce symptoms caused by the tumor. As complete as possible removal of the tumor visible on the MRI is preferred, provided the location of the tumor allows this. Since typically the cells of an<unk>  have already migrated into the surrounding healthy brain tissue at the time of diagnosis, a complete surgical removal of all tumor cells is not possible. The "1p / 19q Codeletion" marker plays an increasingly important role in the selection of therapy and therapy combinations. Because this tumor is an "indolent condition" (a slowly progressive medical condition associated with little or no pain) and the potential morbidity associated with neurosurgery, chemotherapy and radiation therapy, most neurooncologists will initially pursue a course of watchful waiting and treat patients symptomatically. Symptomatic treatment often includes the use of anticonvulsants for seizures and steroids for brain swelling. For further treatment, radiation or chemotherapy with temozolomide or a chemotherapy with Procarbazine, CCNU and Vincristine (PCV) has been shown to be effective and was the most commonly used chemotherapy regimen used for treating<unk> s.
Anaplastic oligodendroglioma
Anaplastic astrocytoma
Neurothekeoma
Oligodendroglioma
Giant-cell glioblastoma
Subependymal giant cell astrocytoma
Fibrillary astrocytoma
Pilocytic astrocytoma