Skull-base neurosurgery · United Kingdom
Private keyhole (minimally invasive) craniotomy, by a fellowship-trained skull-base neurosurgeon.
A small incision, a targeted anatomic corridor and a proper SBNS-recognised unit — for the lesions where a keyhole approach is genuinely the right operation, not just the smaller-looking one.
Why patients choose us
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A fellowship-trained skull-base neurosurgeon
Not a generalist, and not a trainee. A named consultant with dedicated minimally invasive skull-base experience — the only kind of surgeon who should be offering a keyhole approach.
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Open craniotomy honestly compared
Keyhole is not a marketing badge. For some lesions the correct answer is a standard craniotomy — we say so, and refer to the right surgeon if that is the case.
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Independent, and free
We are paid by no hospital, so the recommendation is impartial and costs you nothing.
Indicative pricing
What a private keyhole craniotomy costs in the UK.
Indicative ranges across our SBNS-unit partners. Send the details and we quote firm figures across two or three named surgeons — and say when NHS-funded care at a specialist centre is the right route.
In short
A supraorbital or mini-pterional keyhole craniotomy in our network: £30,000–£55,000, 2–4 day stay.
| Procedure | Indicative range | Theatre time | Typical stay |
|---|---|---|---|
| Supraorbital ‘eyebrow’ keyhole craniotomy | £30,000–£55,000 | 3–5 h theatre | 2–4 day stay |
| Retrosigmoid keyhole (e.g. small acoustic) | £35,000–£60,000 | 4–6 h theatre | 3–5 day stay |
| Mini-pterional keyhole craniotomy | £30,000–£50,000 | 3–5 h theatre | 2–4 day stay |
| Endoscopic endonasal (EEA) skull-base | £35,000–£55,000 | 3–5 h theatre | 2–4 day stay |
| Keyhole biopsy of a brain lesion | £12,000–£22,000 | 1–2 h theatre | 1–2 day stay |
| Neurosurgical consultation only | £300–£500 | 45 min | Same visit |
Prices vary by unit, by which neurosurgeon does the case, by theatre time, ICU length of stay and implants used. We come back with a firm quote within one working day, and flag where NHS specialist-centre care is the more sensible option.
The problem
The right surgeon, the right corridor, the right operation.
A “keyhole” label sells easily. The honest question is whether the corridor is the correct route for your lesion — and whether the surgeon has the fellowship training to know when it is not.
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Not sure it is right for you?
For some lesions an open craniotomy is the correct operation. We will say so — and refer to /treatments/craniotomy.
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Worried it is a smaller surgeon, not a smaller cut?
A keyhole approach is technically demanding. We only introduce fellowship-trained skull-base neurosurgeons at SBNS units.
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Want the pituitary route instead?
If your lesion is pituitary, an endoscopic transsphenoidal approach may be the answer — see /treatments/endoscopic-excision-of-pituitary-adenoma.
The journey
From enquiry to follow-up — what happens, in order.
One team from first message through skull-base MDT to review — including the recovery window and DVLA advice.
Phase 1 · Before your operation
Concierge, off-stage for you
Phase 2 · Admission and theatre
A few days at the SBNS unit
Phase 3 · After
Concierge, back on
- 01
Before
You tell us what is going on
A short, confidential form. The diagnosis, the imaging you already have, and the surgeon or unit you have already seen.
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Before
We come back with a shortlist
Within one working day: two or three fellowship-trained skull-base neurosurgeons at UK SBNS units who genuinely offer a keyhole approach for your lesion — with the trade-offs stated plainly.
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Before
Imaging, planning, MDT review
High-resolution MRI, CT and often angiography feed the neuronavigation plan. Complex cases go through a skull-base MDT before a date is offered.
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Admission & theatre
Admission and anaesthetic
Same-day admission, review with the neurosurgeon and neuro-anaesthetist. General anaesthetic with full intraoperative monitoring.
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Admission & theatre
The operation itself
A 3–6cm incision and a 2–4cm bone flap through a targeted anatomic corridor. Neuronavigation, microscope, endoscopic assistance and cranial-nerve monitoring throughout — typically 3–6 hours.
- 06
Admission & theatre
Recovery in HDU or neuro-ICU
24–48 hours of close neurological observation, then a ward bed. Small incision, less muscle disruption, less pain than a standard craniotomy.
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After
Discharge and follow-up
Home in 2–4 days if uncomplicated. Post-op MRI, histology, DVLA advice, and a clinic review — with rehab or oncology input arranged if the plan needs it.
Typical end-to-end: 3–4 weeks from enquiry to theatre. Full healing and rehab: 8–12 weeks.
When it helps
When a keyhole approach is the right operation.
The lesions we see most often referred for a minimally invasive route — plus the one red flag that means a keyhole is not the right answer.
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Anterior skull-base meningioma
Planum sphenoidale, tuberculum sellae or olfactory-groove meningiomas that sit in a corridor a supraorbital keyhole can reach cleanly.
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Suprasellar craniopharyngioma
Select craniopharyngiomas accessible via a supraorbital or expanded endonasal endoscopic route — chosen case by case.
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Pituitary adenoma extension
A pituitary tumour with suprasellar or parasellar extension that a straightforward transsphenoidal approach alone will not reach.
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Third-ventricle colloid cyst
A benign midline cyst that can be reached endoscopically or via a small transcortical corridor rather than a formal open craniotomy.
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Small vestibular schwannoma
A small acoustic neuroma reached through a retrosigmoid keyhole — an alternative to the standard retrosigmoid craniotomy in the right patient.
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Small aneurysm or cavernoma
Select anterior-circulation aneurysms suitable for clipping, or a superficial cavernoma in a favourable location, done through a mini-pterional or supraorbital keyhole.
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Low-grade glioma or biopsy
A well-defined low-grade glioma in a favourable location, or a targeted biopsy of a deep lesion via a small corridor.
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Red flag: this is not always right
Large tumours, deep lesions with eloquent structures in the way, or highly vascular masses need a proper open craniotomy — not a keyhole. We will tell you plainly.
Approach options
Keyhole is a family of approaches, not one operation.
What each corridor actually involves — and which fits which lesion. The right choice is made from your imaging, not from a website.
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Supraorbital ‘eyebrow’ keyhole
A 4–6cm incision inside the eyebrow gives a corridor to the anterior skull base — meningiomas, craniopharyngiomas, some aneurysms.
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Retrosigmoid keyhole
A small opening behind the ear reaches the cerebellopontine angle — small vestibular schwannomas and select posterior-fossa lesions.
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Endoscopic transsphenoidal
Through the nose and sphenoid sinus to the pituitary and adjacent skull base — no scalp incision at all. Covered fully on our pituitary adenoma page.
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Mini-pterional craniotomy
A shortened version of the classic pterional approach — smaller flap, less muscle disruption, same access to select aneurysms and sylvian lesions.
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Retromastoid / far-lateral keyhole
A targeted opening for lower cranial nerve or foramen-magnum-region lesions when a full far-lateral craniotomy is not required.
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Expanded endonasal endoscopic (EEA)
A purely endonasal endoscopic route for anterior skull-base and clival lesions beyond the reach of a standard transsphenoidal.
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Endoscope-assisted keyhole
Any of the above augmented with an endoscope to see around corners the microscope cannot — often how blind spots are cleared safely.
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Keyhole biopsy
A small corridor with neuronavigation to sample a deep lesion for histology when full resection is not the first step.
Our vetted UK network
A small panel of skull-base neurosurgeons, we picked them.
Consultant neurosurgeons at SBNS-recognised units across London and the wider UK. Not listed publicly — introductions are made privately, once we understand your case.
Selection criteria
How we choose every skull-base surgeon in our network.
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Consultant neurosurgeons with a fellowship in minimally invasive skull-base surgery
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Practising at UK SBNS-recognised neurosurgical units with neuro-anaesthesia and neuro-ICU on site
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Intraoperative neuronavigation, endoscope-assisted microscope and cranial-nerve monitoring as standard
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A skull-base MDT that reviews complex cases before a date is offered
Safety and recovery
What to expect afterwards — honestly.
A keyhole craniotomy is still major skull-base neurosurgery. The things worth planning are your anaesthetic, the DVLA rules, and knowing what is normal after.
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A smaller incision, not a smaller operation
The scar is 3–6cm and the bone flap 2–4cm, but the operation itself is still major skull-base neurosurgery under GA — plan accordingly.
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CSF leak is the classic risk
Meticulous dural and bony closure keeps CSF-leak rates below 2% in experienced hands. Any clear nasal or wound fluid post-op is reported the same day.
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Post-op seizure risk
Anti-seizure medication is usually given for a short course. DVLA rules on driving after a seizure or a craniotomy are explained before you leave hospital.
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Transient neurological deficit
A short-lived deficit relating to the surgical corridor — a numb patch, a weak eye movement, mild facial weakness — is common and usually settles over weeks.
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Cranial-nerve injury is approach-specific
Each corridor has its own cranial nerves at risk — the surgeon explains which nerves your approach passes and what monitoring is in place.
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Incomplete resection is a real trade-off
A narrower corridor means some tumours cannot be fully removed keyhole. The plan is agreed with you before, not defended after.
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DVT, PE and hydrocephalus
Standard neurosurgical risks: clot prevention while in bed, and watching for hydrocephalus — occasionally an external drain or shunt is needed.
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Recovery and return to work
HDU 24–48 hours, ward 2–4 days, office work 4–8 weeks, driving 4–6 weeks (DVLA rules apply), sport 8–12 weeks. Job-dependent — we plan around it.
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Red flags after discharge
Worsening headache, fever, new weakness, seizure, clear fluid from nose or wound, or spreading redness are all reasons to call the team or go to A&E the same day.
Reading your operation note
Your operation note in four parts. Read the last one first.
Whichever keyhole approach was used, the note the neurosurgeon sends you keeps to the same shape.
A quiet reminder
Neurosurgical language is precise and can read coldly — we translate it for you.
If you would like us to talk you through the note and the post-op MRI before your review, just ask.
- 01 Header
Diagnosis, approach and consent
Why the operation was done, the exact keyhole approach chosen, and the risks that were consented for.
- 02 Technique
Navigation, monitoring and closure
Neuronavigation setup, intraoperative monitoring used (SSEP, MEP, facial nerve where relevant), and how the dura, bone and skin were closed.
- 03 Findings
Extent of resection and histology
What was found, how much was removed, blood loss, and which specimens went to histology.
- 04 Impression
Recovery, imaging and follow-up plan
Read this first: post-op imaging plan, DVLA and return-to-work advice, and the next MDT or clinic review — with oncology or rehab input if needed.
Recognised by major UK insurers
Cover for a keyhole craniotomy varies by insurer and diagnosis — usually funded when medically indicated with pre-authorisation. We confirm cover, gap fees and any excess before booking.
Frequently asked
Everything we get asked about keyhole craniotomy.
Quick answers on which lesions suit it, who should do it, and how it compares with an open craniotomy.
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What is a keyhole craniotomy — and how is it different from a standard craniotomy?
A keyhole craniotomy uses a small incision (typically 3–6cm) and a small bone flap (2–4cm) to reach a specific lesion through a targeted anatomic corridor, rather than the wider exposure of a standard craniotomy. The operation inside is still major skull-base neurosurgery — it is the approach that is minimally invasive, not the surgery itself.
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Which lesions can and cannot be treated this way?
Well-selected anterior skull-base meningiomas, small vestibular schwannomas, colloid cysts, some craniopharyngiomas, small aneurysms, superficial cavernomas, favourably located low-grade gliomas and targeted biopsies can be done keyhole. Large tumours, deep lesions with eloquent structures in the corridor, and highly vascular masses need a conventional open craniotomy — see our /treatments/craniotomy page.
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Is a keyhole approach as safe as an open craniotomy?
In appropriately selected patients, done by fellowship-trained skull-base neurosurgeons using neuronavigation, endoscope-assisted microscopy and intraoperative monitoring, published outcomes are comparable — with less blood loss, less pain and shorter stays. Patient selection is the whole game.
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Who should be doing this operation?
A consultant neurosurgeon with dedicated minimally invasive skull-base fellowship training, working at a UK SBNS-recognised unit with neuro-anaesthesia, neuro-ICU, intraoperative imaging and a skull-base MDT. We introduce only surgeons who meet that bar.
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How long is the recovery — and when can I drive or return to work?
HDU or neuro-ICU for 24–48 hours, ward for 2–4 days, discharge if uncomplicated. Back to office work in 4–8 weeks depending on your job, driving in 4–6 weeks with DVLA rules applied (particularly if there was a post-op seizure), and sport in 8–12 weeks.
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How much does a private keyhole craniotomy cost in the UK?
A supraorbital or mini-pterional keyhole is typically £30,000–£55,000; a retrosigmoid keyhole £35,000–£60,000; an endoscopic endonasal approach £35,000–£55,000; a keyhole biopsy £12,000–£22,000. Ranges depend on unit, surgeon, length of theatre time, ICU stay and implants used. NHS-funded care at a specialist SBNS centre remains an option and we will say when that is the right route.
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What are the main risks?
CSF leak (<2% in experienced hands), infection, post-operative seizure, transient neurological deficit relating to the corridor, cranial-nerve injury specific to the approach, incomplete resection, DVT/PE, hydrocephalus (occasionally needing an external drain or shunt), tumour recurrence, and a small subdural collection.
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How does this differ from an endoscopic pituitary operation?
An endoscopic transsphenoidal or expanded endonasal approach reaches the pituitary and adjacent skull base through the nose, with no scalp incision at all — for pituitary lesions specifically, see /treatments/endoscopic-excision-of-pituitary-adenoma. A keyhole craniotomy is used when a small scalp-and-bone corridor is the right route.
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