Minimally Invasive Brain Surgery in Flint, Michigan
Minimally invasive brain surgery treats conditions of the brain and its blood vessels through very small openings, or from inside the blood vessels themselves, instead of a large open incision. At the Institute of General and Endovascular Neurosurgery (IGEN) in Flint, that means three tools: endovascular (catheter-based) procedures, neuroendoscopic surgery, and keyhole craniotomy. It is not automatically better than open surgery. It is better when your anatomy and diagnosis allow it, and an honest assessment tells you which camp you are in.
The idea
Reach the problem, fix it, spare healthy tissue. That is the whole point.
Three approaches
Catheter, endoscope, or a keyhole opening, chosen case by case.
Honest candidacy
Some patients are best served by open surgery. We say so plainly.
Recovery
Smaller access is generally tied to shorter stays and less pain.
Both skill sets
Dr. Khan is fellowship-trained in open and endovascular surgery.
What minimally invasive brain surgery means at IGEN
Here is the honest starting point: minimally invasive is not automatically better than open surgery. It is better when your anatomy and diagnosis allow it, and the job of a good neurosurgeon is to tell you which camp you fall into, even when the answer is open surgery.
This page is written for two readers. If you are a patient or a family member asking "what are my options," you will find plain-language explanations of each approach, who qualifies, and what recovery looks like. If you are a referring clinician deciding when to send a patient for a minimally invasive assessment, the candidacy criteria and the referral checklist below are meant to be clinically useful, not marketing filler.
These techniques are a recognized, well-studied family of approaches. Peer-reviewed work, including a 2025 review in the journal Cureus, groups endovascular, endoscopic, and keyhole techniques into a shared philosophy: smaller corridors, less disruption of healthy tissue, and case-by-case selection. The full scope of catheter-based care at IGEN is covered on our endovascular neurosurgery and cerebrovascular neurosurgery pages.
This page in one minute
Three ways to reach the problem
The right route depends on the diagnosis, the location, and your overall health. All three exist for the same reason: reach the problem, fix it, and spare the healthy tissue around it.
Endovascular (catheter-based) surgery
Treats the problem from inside the blood vessels. A thin catheter travels from an artery in the wrist or groin up to the vessels of the brain under live X-ray guidance. Through it, an aneurysm can be packed with soft coils or bridged with a flow-diverting stent, an abnormal vessel tangle can be embolized, and a stroke-causing clot can be pulled out. No incision in the skull.
Neuroendoscopic surgery
A slim camera and fine instruments reach deep targets through natural corridors, such as the nose, or through a small port. The surgeon works from a magnified, well-lit view, which helps protect the delicate structures crowded around the target. It handles selected tumors, cysts, and fluid-flow problems deep within the brain or its fluid spaces.
Keyhole craniotomy
Open surgery through a deliberately small, carefully planned window, often just a few centimeters, instead of a large traditional craniotomy. It is the middle ground: chosen when a lesion needs direct access but can still be reached through a small corridor. The neurosurgeons who pioneered the keyhole concept built it on careful case selection and meticulous planning.
Which conditions can be treated this way?
IGEN uses minimally invasive approaches for several brain and cerebrovascular conditions, chosen case by case from imaging and clinical judgment.
Brain aneurysms
Unruptured and ruptured aneurysms can often be treated from inside the vessel with coiling or flow diversion. How that choice is made is covered in our guide to coiling vs. clipping and on the aneurysm treatment page.
AVMs and dural fistulas
Abnormal tangles or connections between vessels may be treated with endovascular embolization, sometimes combined with other methods, depending on their pattern of feeding vessels.
Acute ischemic stroke
When a large vessel is blocked, catheter-based clot removal can restore blood flow in appropriate cases. This one is measured in minutes: call 911 first, always.
Intracranial hemorrhage
Certain bleeds in or around the brain may be managed with minimally invasive evacuation or by treating the underlying vascular cause. A sudden, severe headache deserves emergency care; see our worst headache guide.
Brain tumors
Selected tumors, especially near the skull base or ventricles, can be reached through endoscopic or keyhole corridors. Some vascular tumors are embolized before surgery. Start with the brain tumor overview.
Carotid and intracranial narrowing
Selected cases of artery narrowing can be treated from inside the vessel. Learn more on the carotid artery stenosis page.
Am I a candidate for minimally invasive brain surgery?
Three questions decide it, and they work as a checklist rather than a single yes-or-no verdict.
Vascular anatomy
For endovascular procedures, the size, shape, and neck of an aneurysm, the feeding pattern of an AVM, and the access route through your arteries all shape whether a catheter-based approach is safe and effective.
Lesion type and location
Deep, central, or skull-base lesions may favor endoscopic or endovascular routes. A lesion sitting somewhere awkward to reach through a small corridor may be better served another way.
Overall health
Age alone rarely rules a patient out. Heart and kidney function, bleeding risk, tolerance for antiplatelet medications, and other conditions all get weighed.
A minimally invasive route may fit when…
- Your vascular anatomy gives the catheter a safe, workable route
- The lesion can be reached through a natural corridor or a small planned opening
- The goal of treatment can be fully achieved without wide exposure
- Your overall health favors shorter access and anesthesia time
Open surgery may be the better operation when…
- An aneurysm's shape or branch pattern favors direct clipping
- The lesion needs wide, direct exposure to treat safely and completely
- Vessel disease or anatomy makes catheter access itself risky
- A small corridor would put critical structures at needless risk
Some patients are better served by traditional open surgery, and IGEN will say so directly. An honest candidacy conversation is where trust is earned or lost, and it is a common reason patients come to us for a second opinion. Because Dr. Khan practices both open and endovascular surgery, the recommendation you get is not limited to the only tool available.
How does recovery differ from open surgery?
Minimally invasive approaches are generally associated with shorter hospital stays, less postoperative pain, and a faster return to normal activity than traditional open surgery, because less tissue is disturbed on the way in. Published reviews of these techniques, including the 2025 Cureus review, describe the same pattern across endovascular, endoscopic, and keyhole procedures.
The exact recovery still depends on the procedure, the condition, and the person. Emergency treatment is the clearest example: after stroke clot removal, the hospital stay is driven by the stroke itself, not by the small puncture in the wrist or groin.
Recovery is individual, so IGEN gives each patient a written, personalized plan rather than a stock timeline, with specific limits set by your surgeon.
What patients typically notice
What happens at your first appointment in Flint
Your first visit at IGEN, at 1187 W Bristol Rd, Suite 1, Flint, MI 48507, is a diagnostic and planning consultation with Dr. Shah-Naz Khan, MD, FRCSC, FAANS.
Review
Your symptoms, history, and any prior imaging are reviewed personally, not delegated.
Examination
A focused neurological examination establishes your baseline.
Plain language
Your diagnosis is explained clearly, with the realistic options laid out, including whether a minimally invasive approach genuinely suits your case.
The plan
Benefits, risks, and what recovery would actually involve for you. If another physician referred you, findings and next steps are documented clearly back to them.
Please send medical records by phone or fax rather than through web forms; it keeps your information secure. You can learn more about the practice and Dr. Khan before your visit.
Imaging and technology used to plan your procedure
Good imaging is the foundation of safe minimally invasive surgery. It does two jobs: it confirms whether your anatomy suits a small-corridor approach, and it lets the team rehearse the route before treatment.
CT and CT angiography
Fast, detailed pictures of the brain and its vessels, often the first map of the problem.
MRI and MR angiography
Detailed views of brain tissue and vessels without radiation, used for diagnosis and route planning.
Catheter angiography (DSA)
Digital subtraction angiography gives a precise, real-time map of the brain's blood vessels. During endovascular procedures, live fluoroscopy steers the catheter.
When a case is not suited to a minimally invasive technique, the imaging usually makes that obvious. That protects you from an approach that would carry needless risk, and it is exactly the point of planning this carefully.
One surgeon, both skill sets
Shah-Naz Khan, MD, FRCSC, FAANS is a board-certified, fellowship-trained neurosurgeon and the founder of the Institute of General and Endovascular Neurosurgery in Flint. She completed fellowship training in cerebrovascular and endovascular neurosurgery at the Mayfield Clinic, University of Cincinnati, and practices both open and catheter-based surgery.
That dual training matters on this page more than anywhere else. When one surgeon offers only clipping, or only coiling, the recommendation tends to follow the tool. Because Dr. Khan practices both, the advice you get is shaped by your anatomy, not by the limits of a single skill set. She founded IGEN in 2014 on a standard of excellence, ethics, and integrity, and second opinions are genuinely welcomed.
Why patients choose IGEN
- Board-certified, fellowship-trained neurosurgeon
- Open and endovascular techniques in one practice
- Honest candidacy calls, including when open surgery is better
- Every case personally reviewed by Dr. Khan, not delegated
- Second opinions genuinely welcomed
Fast-track a minimally invasive assessment
Referrals are triaged by neurological deficit, imaging findings, and time-sensitive risk. Findings, options, and next steps are documented clearly back to you, with support for co-management and escalation criteria.
- The reason for referral and the clinical question
- Relevant history and current medications, including anticoagulants and antiplatelets
- Neurological exam findings
- All available imaging (CT, CTA, MRI, MRA, or angiography) with the source images, not just the reports
Refer promptly for
- An unruptured aneurysm found on incidental imaging
- A suspected AVM or dural fistula
- Symptomatic carotid or intracranial narrowing
- A new intracranial hemorrhage
- Acute large-vessel stroke belongs in the emergency pathway: 911
Minimally invasive brain surgery: frequently asked questions
What is minimally invasive brain surgery?
Is minimally invasive brain surgery available near me in Flint?
What is catheter-based brain surgery?
Who is not a candidate for minimally invasive brain surgery?
What is the recovery time for minimally invasive brain surgery?
What are the benefits of endovascular surgery versus open brain surgery?
Will my insurance cover minimally invasive brain surgery?
Do I need a referral to see Dr. Khan?
Can I get a second opinion before deciding on surgery?
Wondering which approach fits your case?
Bring your story and your scans. Dr. Khan will review them personally and give you a straight answer about the right operation for your anatomy, whether that is catheter-based, keyhole, or open surgery.
- Request a consultation by phone or through the contact page.
- Share any CT, MRI, or angiography results you already have so nothing is repeated needlessly.
- Meet Dr. Khan for a personal review, a clear explanation, and honest next steps.
Sources
- Laguardia S, Piccioni A, et al. A Comprehensive Review of the Role of the Latest Minimally Invasive Neurosurgery Techniques and Outcomes for Brain and Spinal Surgeries. Cureus. 2025;17(5):e84682.
- Reisch R, Stadie A, Kockro RA, Hopf N. The keyhole concept in neurosurgery. World Neurosurgery. 2013;79(2 Suppl):S17.e9-13.
- Practice details (address, phone, fax, referral process, accepted insurance plans) verified against instituteofneurosurgery.com, August 2026.