Awake craniotomy

What it is

An awake craniotomy is a brain operation in which the patient is awakened for part of the surgery so that the team can test critical functions — such as speech and movement — in real time as the surgeon works. This allows removal of tumor near critical areas while preserving function. It is possible because the brain itself has no pain sensation.

Understanding Awake craniotomy

When a glioma is near "eloquent" areas controlling functions like language, movement, or sensation, the challenge is to remove as much tumor as possible without damaging those functions. An awake craniotomy addresses this: with the patient comfortable and awake during the key part of the operation, the surgeon can stimulate areas of the brain and have the patient perform tasks (such as speaking, naming objects, or moving), directly identifying which areas are critical and must be preserved. This real-time feedback lets the surgeon safely maximize tumor removal while avoiding harm to function — something imaging alone cannot fully achieve. The patient feels no pain from the brain surgery (the scalp is numbed), and sedation is adjusted so they are comfortable. Awake craniotomy is a well-established technique for tumors in critical locations. Understanding awake craniotomy in gliomas clarifies how operating with the patient awake protects function.

Why it matters

Understanding awake craniotomy helps patients and families see how being awake for part of surgery protects critical functions — allowing the surgeon to remove tumor near speech or movement areas while testing those functions in real time.