CranialReviewed by Dr. Julius Mautin Vitowanu, Consultant Neurosurgeon · 2026-03-20

Microsurgical Craniotomy & Brain Lesion Resection

High-precision surgical opening of the skull utilizing operative microscopy and neuronavigation to safely resect brain tumors and cranial lesions.

Clinical Safety Disclaimer: This surgical overview is provided for patient education. Surgical recommendations are made only after in-person clinical examination and formal slice-by-slice neuroimaging review.

01 / Operative Overview

What Is This Procedure?

A craniotomy is a neurosurgical operation where a temporary bone window is created to access the brain, skull base, or ventricles. Utilizing state-of-the-art operative magnification, micro-instruments, and intraoperative neuronavigation (frameless stereotaxy), the surgeon navigates neural corridors with sub-millimeter precision to maximize tumor resection while protecting critical speech, motor, and sensory pathways.

02 / Clinical Indications

Why It May Be Recommended

Histopathological diagnosis and total or subtotal resection of intracranial neoplasms (meningiomas, gliomas, metastases, acoustic neuromas)

Relief of elevated intracranial pressure and mass effect caused by expanding lesions

Reduction of tumor burden to enhance the efficacy of adjuvant therapies (radiotherapy, targeted medical therapy)

Control of intractable tumor-associated epileptic seizures

03 / Surgical Mechanism

How It Works

Preoperative volumetric MRI is loaded into a computerized optical guidance workstation (neuronavigation). This provides real-time 3D tracking of surgical instruments relative to the patient's anatomy. Under microscopic illumination, the lesion is systematically detached from healthy brain parenchyma along natural micro-dissection planes, coagulating tumor vessels while preserving essential feeding and draining cerebral vessels.

04 / Preoperative Protocol

Preparation & Clinical Workup

STEP 1High-resolution stereotactic navigation MRI with intravenous gadolinium contrast

STEP 2Functional MRI (fMRI) or DTI tractography if the lesion neighbors eloquent motor or speech cortex

STEP 3Corticosteroid administration (e.g. dexamethasone) to reduce peritumoral vasogenic edema

STEP 4Comprehensive multidisciplinary neuro-oncology and anesthetic evaluation

05 / In the Operating Suite

Operative Sequence

01Rigid head fixation with Mayfield skull clamp to maintain absolute spatial accuracy with navigation

02Curvilinear scalp incision planned behind the hairline for optimal cosmetic healing

03Creation of burr holes and osteotomy flap with a high-speed craniotome

04Gentle dural reflection with dural hitch sutures to minimize epidural venous oozing

05Microsurgical intra-axial or extra-axial dissection using ultrasonic aspirator and bipolar micro-cautery

06Careful inspection of the resection cavity and stringent microvascular hemostasis

07Dural watertight closure, rigid replacement of the bone flap with titanium microplates, and cosmetic scalp closure

06 / Postoperative Course

Recovery & Aftercare

Initial 24 hours in the Neuro-Intensive Care Unit (NICU) with continuous neuro-checks

Early ambulation on postoperative day 1 or 2 as tolerated

Gradual corticosteroid taper over several days to weeks

Routine postoperative baseline MRI within 48 to 72 hours to document resection extent

Inpatient stay usually 3 to 6 days depending on functional status and rehabilitation needs

Histopathology review within 7 to 10 days to guide multidisciplinary tumor board planning

07 / Surgical Risks & Transparency

Risks & Clinical Considerations

Transient or permanent neurological deficit depending on tumor proximity to functional brain areas

Cerebral edema or postoperative intracranial hemorrhage within the resection bed

Cerebrospinal fluid (CSF) leak from dural repair

Wound infection or aseptic meningitis

Deep vein thrombosis (DVT) requiring compression boots and early mobilization

08 / Common Inquiries

Frequently Asked Questions

Is the bone flap put back after surgery?

Yes. In an elective craniotomy, the bone window is securely reattached using low-profile titanium micro-plates and screws, which permanently integrate as the bone heals.

Will my entire head need to be shaved?

No. Modern surgical technique involves shaving only a narrow strip along the planned incision line, which is usually positioned behind the hairline to maintain natural aesthetics.

How long before I can return to normal work?

Most patients resume desk-based work within 4 to 6 weeks, while strenuous physical labor or high-impact athletic pursuits require 8 to 12 weeks of recovery.

Surgical Assessment

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Dr. Julius Mautin Vitowanu

Consultant Neurosurgeon, Lagos State University Teaching Hospital (LASUTH). Fellow, West African College of Surgeons (WACS).

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