Neuroendovascular Embolization: Blocking Blood Flow to Tumors Before Surgery
Removing a brain or spinal cord tumor requires meticulous planning, especially when the tumor has a
rich blood supply. Highly vascular tumors—such as meningiomas, hypervascular metastases, or
glomus tumors—present surgical challenges due to the risk of significant intraoperative blood
loss.
To improve surgical safety, neurosurgeons often utilize preoperative neuroendovascular
embolization. This procedure intentionally blocks the blood vessels supplying the tumor shortly
before open resection.
How Preoperative Embolization Works
Preoperative embolization is a minimally invasive endovascular procedure performed by a specialist
in interventional neuroradiology.
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Catheter Navigation: A thin micro-catheter is introduced into a blood vessel in the arm or leg and carefully guided under real-time X-ray imaging directly into the arterial branches that feed the tumor.
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Angiographic Mapping: Contrast dye is injected to precisely map the tumor’s vessel network, ensuring that blood supply to normal surrounding brain tissue is preserved.
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Embolic Delivery: Small embolic materials—such as tiny synthetic particles, liquid embolic agents (like Onyx or glue), or micro-coils—are released through the micro-catheter into the feeder vessels, stopping blood flow into the tumor mass.
Key Clinical Benefits for Surgical Patients
Performing embolization 24 to 72 hours prior to scheduled surgical resection provides several key
advantages:
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Dramatically Reduced Blood Loss: Cutting off the main arterial blood supply reduces bleeding during surgery, creating a clearer view for the neurosurgeon.
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Reduced Tumor Size and Firmness: Deprived of blood flow, hypervascular tumors often soften or shrink, making them significantly easier and safer to detach from surrounding brain or nerve tissue.
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Shorter Operating Times: Reduced intraoperative bleeding speeds up tumor dissection, reducing overall time in surgery and under anesthesia.
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Lower Complication Rates: Safer resection protects critical adjacent neural structures and blood vessels.
By combining minimally invasive endovascular techniques with open microsurgery, complex tumor cases
can be managed with higher precision and lower overall risk.
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Book Online: Visit igeaneuro.com to request a comprehensive diagnostic consultation with our neurosurgical team.
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Call Our Team Today: Speak directly with our dedicated patient care coordinators at (866) 467-1770.
