<unk> s, like all other infiltrating gliomas, have a very high (almost uniform) rate of recurrence and gradually increase in grade over time. Recurrent tumors are generally treated with more aggressive chemotherapy and radiation therapy. Recently, stereotactic surgery has proven successful in treating small tumors that have been diagnosed early. Long-term survival is reported in a minority of patients. With aggressive treatment and close monitoring, it is possible to outlive the typical life expectancies for low grade<unk> . Westergaard's study (1997) showed that patients younger than 20 years had a median survival of 17.5 years. For patients that are over 30, the survival rate is lower but as treatment options grow, the survival rate is higher. However, a patient with bad general health is more likely to pass sooner than those that have good general health. Another study shows a 34% survival rate after 20 years. However, as discussed above, such figures can be misleading since they do not factor in the types of treatment nor the genetic signature of the tumors. Additionally, such historic data loses significance due to the relatively long survival of patients (compared to other types of brain tumors) and the introduction of newer treatment options over time.
Oligodendroglioma
Neurothekeoma
Pilocytic astrocytoma
Astroblastoma
Ependymoma
Astrocytoma
Glioblastoma
Giant-cell glioblastoma