Brain Tumor Removal (Craniotomy)

Craniotomy for Brain Tumor

A craniotomy is the primary surgical procedure used to remove a brain tumor. It involves carefully removing a section of the skull, known as a "bone flap," to provide the surgeon direct access to the brain. Once the tumor is addressed, the bone flap is typically replaced and secured with small titanium plates and screws. This procedure is the cornerstone of neurosurgical oncology, allowing for both the removal of the mass and the acquisition of tissue for a precise diagnosis.

When You Should Consider a Craniotomy

• Primary Brain Tumors: For tumors that originate in the brain, such as gliomas or meningiomas, where removal can reduce pressure and slow progression.

• Metastatic Tumors: When cancer from another part of the body has spread to the brain and is causing neurological symptoms or is surgically accessible.

• Diagnostic Biopsy: When a tumor's type is unknown, a craniotomy allows for a larger tissue sample than a needle biopsy, leading to a more accurate treatment plan.

• Intracranial Pressure Relief: To alleviate the "mass effect" caused by a tumor that is compressing healthy brain tissue, which can cause severe headaches, nausea, or vision loss.

• Symptom Management: To stop or reduce seizures and focal neurological deficits (like weakness or speech issues) caused by the tumor’s location.

How It Is Performed

• Mapping: Surgeons use Neuronavigation—a high-tech system similar to GPS for the brain—and pre-operative MRI scans to pinpoint the tumor's exact coordinates before making an incision.

• Anesthesia: The surgery is performed under general anesthesia and can take anywhere from 3 to 7 hours depending on the tumor's location and complexity.

• The Opening: A precise incision is made in the scalp, and a specialized surgical drill (craniotome) is used to remove a piece of the skull.

• Tumor Removal (Resection):
  Gross Total Resection: The surgeon removes the entire visible tumor.
  Subtotal Resection: If the tumor is too close to critical areas (eloquent brain) controlling speech or movement, only a portion is removed to preserve function.

• Advanced Tools: Surgeons may use an ultrasonic aspirator to break up the tumor or fluorescent dye (5-ALA), which makes tumor cells glow under a special light to help distinguish them from healthy tissue.

• Closing: After the tumor is removed, the bone flap is put back in its original position, and the scalp is closed with stitches or surgical staples.

Specialized Types of Craniotomy

• Awake Craniotomy: The patient is woken up during the middle of surgery to perform tasks like talking or moving fingers. This allows the surgeon to map and avoid "eloquent" areas responsible for speech or motor skills in real-time.

• Endoscopic Craniotomy: A minimally invasive approach using a small hole and a camera (endoscope), often used for tumors located in the ventricles or deep within the brain.

• Keyhole Craniotomy: A smaller, more targeted opening (often behind the ear or above the eyebrow) used to access specific areas with minimal disruption to surrounding tissue.

Pre-Procedure Preparation

• High-Resolution Imaging: Detailed MRI or CT scans with contrast to map the tumor’s size, vascularity, and relationship to functional brain zones.

• Steroid Protocol: You may be started on medications like dexamethasone a few days before surgery to reduce brain swelling (edema) caused by the tumor.

• Anti-Seizure Medication: Often prescribed preventatively to reduce the risk of a seizure during or after the procedure.

• Fasting: Adhering to "nothing by mouth" instructions for 8 hours prior to your scheduled anesthesia.

• Scalp Preparation: The surgical area may be washed with a specialized antiseptic, and a small amount of hair may be trimmed along the incision line.

Tests Before a Craniotomy

• Functional MRI (fMRI): To identify specific areas of the brain used for speech, movement, and sensation relative to the tumor.

• Diffusion Tensor Imaging (DTI): A specialized MRI that maps the white matter "wiring" of the brain to help the surgeon avoid critical pathways.

• Blood Panels: A routine check of your blood count, electrolytes, and clotting factors to ensure a safe surgical experience.

• ECG: A standard heart check to confirm cardiovascular stability for a multi-hour procedure.

Life After a Craniotomy

• Hospital Stay: Typically 3 to 7 days. You will likely spend the first night in the Neuro-ICU for intensive monitoring of your neurological status.

• Initial Symptoms: It is common to experience headaches, fatigue, and "brain fog." You may also notice temporary swelling around the eyes or scalp.

• Activity Restrictions: No heavy lifting or strenuous exercise for 6 to 8 weeks. Most patients can return to light desk work within 4–6 weeks.

• Stitch Removal: Scalp stitches or staples are typically removed by the surgical team 10–14 days after the procedure.

• Follow-up Treatment: Depending on the biopsy results (pathology), further treatments such as radiation or chemotherapy may begin a few weeks after the brain has had time to heal.

Why Specialized Treatment Is Highly Effective

• Maximum Safe Resection: The combination of neuronavigation and intraoperative mapping allows surgeons to remove the largest amount of tumor possible while protecting your personality and physical abilities.

• Immediate Pressure Relief: Removing the tumor mass often leads to a rapid improvement in headaches and other symptoms caused by brain compression.

• Precision Technology: Tools like fluorescent dyes and ultrasonic aspirators allow for cleaner margins and less trauma to the surrounding healthy brain tissue.

• Multidisciplinary Expertise: Care is coordinated between neurosurgeons, neuro-oncologists, and rehabilitation specialists to provide a comprehensive path from surgery to recovery.

• Definitive Diagnosis: A craniotomy provides the highest quality tissue samples, ensuring that follow-up treatments (like targeted therapy) are based on the exact molecular profile of the tumor.