expanded endoscopic endonasal approach

a pioneering technique

Minimally Invasive Brain & Upper Spine Surgery
Dr. Amin Kassam, Vice President of Neurosciences, explains the Expanded Endonasal Approach.


Finding out you have a brain tumor is scary. And finding out you need brain surgery can also be scary. But sometimes the best way to get well is to remove the tumor.

At Aurora, we have pioneered a minimally invasive surgery to safely get tumors out of the skull base and the upper spine. It doesn’t require any incisions. And that means less time in the hospital, fewer complications and faster recovery.  

We call it the expanded endoscopic endonasal approach (EEEA). 


In the past, surgeons had to cut into your skin to reach your brain or spine. Sometimes that meant removing a piece of your skull. Sometimes it meant moving your nerves, arteries or even part of your brain out of the way to reach a tumor.

The Expanded Endoscopic Endonasal Approach gives you a safer, simpler option. 

Your doctors insert a long, thin tube called an endoscope into your nostrils, which provide a natural pathway through your sinus cavities to your skull base and your upper spine. Using delicate surgical instruments attached to the endoscope, your surgeons can remove a tumor through your nose without disturbing the brain tissue or nerves nearby. 

related conditions

The expanded endoscopic endonasal approach is used to treat these brain and spine conditions:
  • Brain tumors (craniopharyngiomas, sphenoid sinus carcinomas, olfactory neuroblastomas)
  • Cancers of the sinus (squamous cell, adenocystic and metastatic)
  • Meningiomas of the tuberculum sella, petroclival and cavernous sinus regions
  • Pituitary adenomas (acromegaly, Cushing’s disease, prolactinomas, non-functional adenomas, pituitary apoplexy)
  • Rathke’s cleft cysts
  • Skull base tumors and cysts
  • Chordomas and chondrosarcomas


With the expanded endoscopic endonasal approach, you can expect:
  • Faster recovery 
  • Fewer complications
  • Less pain 
  • Less scarring
  • A shorter hospital stay

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