Understanding Pituitary Tumors
Most pituitary tumors are adenomas. These are almost always benign (non-cancerous) growths that arise from the gland itself. Even though they aren't cancerous, they cause problems in two ways:
The tumor may produce too much of a specific hormone (e.g., Prolactin or Growth Hormone), leading to systemic health issues.
The tumor grows large enough to press on the nearby optic nerves, causing vision loss or headaches.
Surgery is often required when medication cannot control hormone levels or when the tumor threatens your eyesight.
Conditions Treated
The endoscopic approach is the standard of care for a variety of skull base lesions:
Includes non-functioning tumors (large masses) and functioning tumors like those causing Acromegaly or Cushing's Disease.
Rare tumors that grow near the pituitary stalk, often requiring delicate separation from vital structures.
Benign, fluid-filled sacs that can be drained and partially removed through the nose to relieve pressure.
The Surgical Procedure
This procedure is typically a team effort between a Neurosurgeon and an ENT (Otolaryngologist).
- 1
Nasal Phase: The ENT surgeon uses an endoscope to create a path through the nasal cavity to the sphenoid sinus (the air-filled space behind the nose).
- 2
Accessing the Sella: A small window of bone is removed to reveal the "Sella Turcica," the bony cradle where the pituitary sits.
- 3
Tumor Removal: Using high-definition 4K endoscopes, the neurosurgeon carefully separates the tumor from the healthy pituitary gland and the optic nerves.
- 4
Reconstruction: Once the tumor is removed, the area is sealed. This may involve using a small piece of fat, a synthetic graft, or a "nasal septal flap" to prevent brain fluid (CSF) from leaking.
Unlike older "microscopic" techniques, the endoscope can "look around corners," allowing the surgeon to see parts of the tumor that were previously hidden, leading to more complete removals.
Preparing for Surgery
Before surgery, you will undergo a rigorous evaluation to map out the tumor and your hormonal health:
- High-Resolution MRI: Specifically a "Pituitary Protocol" scan.
- Endocrine Panel: Comprehensive blood tests to check levels of Cortisol, Thyroid, Growth Hormone, and Prolactin.
- Neuro-Ophthalmology: Formal visual field testing to document any baseline vision loss.
In some cases, you may need to start temporary hormone replacement (like hydrocortisone) immediately before or after surgery while the gland recovers.
Recovery & Aftercare
Expect to stay 2 to 3 nights. We monitor your fluid intake and urine output closely, as surgery can temporarily affect the hormones that control salt and water balance.
You must avoid blowing your nose, sneezing with your mouth closed, or heavy lifting for 4-6 weeks to allow the surgical seal to heal completely.
You will use saline nasal sprays or rinses to keep the passages clear. The ENT surgeon will see you in the office to remove any crusting or internal packing.
Risks & Outcomes
While the endoscopic approach is highly safe, as with any brain surgery, specific risks exist:
- CSF Leak: Brain fluid leaking from the nose. This may require a minor repair procedure.
- Diabetes Insipidus (DI): Temporary or permanent imbalance in water hormones, leading to extreme thirst and frequent urination.
- Hormone Deficit: The healthy part of the gland may be "stunned," requiring lifelong hormone replacement.
- Vision Changes: While the goal is to improve vision, there is a small risk of worsening if the tumor is very adherent to the nerves.
Frequently Asked Questions
Will my nose look different after surgery?
No. Because we work through the nostrils, there are no external incisions or changes to the shape of your nose.
Can the tumor come back?
If a tumor is completely removed, recurrence is low. However, for large tumors where some cells are left behind to protect vital structures, periodic MRI monitoring is essential.
When can I return to work?
Most patients return to light desk work in 2-3 weeks, but physical labor should be avoided for at least 6 weeks.
Visualizing the Endonasal Approach
See an animation of how the endoscope travels through the sphenoid sinus to reach the pituitary gland.
Watch Video →
