Malignant gliomas

Area of Science:

• Neuro-oncology
• Neurosurgery
• Radiation Oncology

Background:

• Gliomas are the most common primary brain tumors in adults.
• High-grade gliomas include anaplastic astrocytoma (AA), glioblastoma multiforme (GBM), and anaplastic oligodendroglioma (AO).
• Mixed lineage tumors like anaplastic oligoastrocytoma (AOA) also occur.

Purpose of the Study:

• To outline the standard and emerging treatment strategies for adult high-grade gliomas.
• To discuss the role of surgery, radiation, and chemotherapy in managing these CNS neoplasms.
• To highlight prognostic factors and patient-specific treatment considerations.

Main Methods:

• Maximal safe surgical resection for diagnosis and improved outcomes.
• Postsurgical radiation therapy as a standard survival-improving treatment.
• Adjuvant chemotherapy, including BCNU and PCV regimens, with consideration for patient age and tumor molecular markers.

Main Results:

• Aggressive surgical resection enhances survival and neurologic function.
• Postsurgical irradiation is the most effective current treatment for survival.
• Chemotherapy offers modest benefits, particularly in younger patients and specific molecular subtypes (e.g., 1p/19q-deleted AO with PCV).

Conclusions:

• Multimodal therapy including surgery, radiation, and chemotherapy is standard for high-grade gliomas.
• Tumor molecular characteristics, such as 1p/19q codeletion, significantly impact treatment response and prognosis.
• Personalized treatment approaches, considering patient factors and tumor biology, are crucial for optimizing outcomes in glioma management.