Intraoperative Language Area Mapping: Cortico-Cortical Evoked Potential

Area of Science:

• Neurosurgery
• Neurophysiology
• Neuro-oncology

Background:

• Maximal safe resection (MSR) is crucial for glioma prognosis, especially for tumors near eloquent areas.
• Intraoperative language mapping is essential for tumors within or near the complex language network.
• Awake surgery is the gold standard for language mapping but has limitations.

Purpose of the Study:

• To review the current evidence on cortico-cortical evoked potential (CCEP) monitoring for intraoperative language function assessment.
• To evaluate the effectiveness of CCEP-guided surgery in preserving language function during brain tumor resection.

Main Methods:

• Literature review of studies utilizing CCEP monitoring in brain surgery.
• Analysis of CCEP's role in language area identification and MSR.
• Comparison of CCEP monitoring under general anesthesia with awake surgery.

Main Results:

• CCEP monitoring is a viable alternative to awake surgery for language mapping under general anesthesia.
• CCEP-guided surgery shows potential for achieving MSR while preserving language function.
• Evidence supports CCEP's effectiveness in complex language network cases.

Conclusions:

• CCEP monitoring is an effective tool for intraoperative language assessment, particularly when awake surgery is not feasible.
• CCEP-guided brain surgery can help achieve maximal safe resection and preserve crucial language functions.
• Further research can solidify CCEP's role in neurosurgical oncology.