Brain and skull base · Procedure

Endoscopic Pituitary Tumor Surgery

Endoscopic pituitary surgery reaches the pituitary gland through the nose and a sinus behind it. The gland sits below the brain and helps control hormones. The decision to operate depends on the tumor’s effect on hormones, vision and nearby structures—not simply its size.

At a glance

The goals may include protecting vision, controlling excess hormones and obtaining a diagnosis.
Medicines or observation may be appropriate for some pituitary tumors.
Hormone treatment and blood tests can remain important even after successful tumor removal.

Why surgery may be considered

A tumor can press on the nerves carrying visual information or interfere with normal pituitary function. Some tumors release excess hormones, causing problems elsewhere in the body. Surgery may reduce pressure, remove tissue for laboratory testing or treat hormone overproduction. Your team should explain which problem the proposed operation is intended to address.

Most pituitary tumors are not cancer, but a noncancerous tumor can still require treatment. MRI, hormone blood tests and a formal vision assessment help guide the decision. An endocrinologist, a specialist in hormones, is often involved before and after surgery. Johns Hopkins Medicine: Endoscopic pituitary surgery

What are the alternatives?

Some small, stable tumors can be monitored with scans, hormone tests and vision checks. Prolactin-producing tumors, called prolactinomas, are commonly treated first with medicines that lower prolactin and shrink the tumor. Surgery may be considered when medicines are unsuitable, ineffective or poorly tolerated. NIDDK: Prolactinoma

Radiation and tumor-specific medicines may be options for persistent or recurrent disease. Occasionally the tumor’s anatomy calls for a different surgical route. Ask what could happen if treatment is delayed, how observation would be organized and which changes would prompt a new decision.

What the operation involves

Under general anesthesia, the surgeon passes a small camera and instruments through the nostrils and opens the sphenoid sinus behind the nose. An opening in the skull base provides access to the pituitary region. Tumor is removed while trying to protect the normal gland, nearby arteries and vision nerves. A neurosurgeon and an ear, nose and throat surgeon may work together. Memorial Sloan Kettering: Transsphenoidal surgery for pituitary tumors

The opening is closed after removal. Depending on the opening and whether brain fluid is encountered, the repair may use a graft or a flap of nasal lining. A graft sometimes requires a separate small incision elsewhere on the body. Nasal packing or splints may be used. Ask what repair is anticipated and how it affects aftercare.

What surgery can and cannot promise

Relieving pressure may help vision, but recovery depends partly on how long and how severely the nerves have been affected. Hormone levels may improve without returning to normal immediately. Some patients need long-term hormone replacement, medicines to control the tumor’s hormonal effects, radiation or another operation.

Tumor attached to critical structures may be intentionally left behind. The surgeon’s impression, postoperative MRI, tissue diagnosis and hormone results answer different questions; no single result establishes the entire outcome. Ask how the team will judge remission and how long surveillance will continue.

Risks to discuss

Risks include bleeding, infection, anesthesia complications and blood clots. Specific concerns include leakage of cerebrospinal fluid (CSF, the fluid around the brain and spinal cord), meningitis (infection around the brain and spinal cord), new hormone deficiencies, changes in water balance, damage to vision and injury to a major blood vessel. Serious injury can cause stroke or be life-threatening. Nasal crusting, congestion or changes in smell can also occur. Individual risk depends on the tumor and the extent of surgery. Johns Hopkins Medicine: Endoscopic pituitary surgery

Water and sodium disturbances may develop after discharge, even when early recovery seems reassuring. Blood tests and the prescribed fluid plan help the team detect and manage them. Do not create your own fluid restriction or increase fluids to a fixed target. UCLA Health: Pituitary surgery FAQs

Preparing for surgery

Bring your medication and supplement list, past scans, hormone results and details of prior nasal surgery. Ask for written instructions about fasting and each medicine, especially blood thinners, diabetes treatments and hormone replacement. Do not independently stop prescribed treatment. Tell the team about sleep apnea and CPAP use so a safe postoperative plan is ready.

Arrange transport and help at home. Before discharge, confirm who manages hormone medicines, where blood tests will be drawn and who will review the results. Save the surgical team and after-hours numbers from the discharge paperwork.

Recovery and when to seek help

Staff monitor vision, neurological function, urine output and laboratory results. Fatigue and nasal blockage can occur, but recovery varies. Follow the specific plan for nose blowing, straining, nasal products and activity; nasal rinses are not appropriate at every stage of every repair.

Call 911 for sudden vision loss, new weakness or speech difficulty, a first seizure, a seizure lasting five minutes or longer, repeated seizures without recovery, or collapse. Severe headache with fever, stiff neck or confusion needs emergency assessment. Contact the surgical team promptly the same day for clear watery nasal drainage, unusually large amounts of urine with intense thirst or worsening nausea. Use the on-call route after hours; seek urgent assessment if help is not promptly available.

If you cannot keep prescribed hydrocortisone or other cortisol replacement down, seek immediate medical help and follow your prescribed emergency steroid plan. Use emergency care if the team cannot be reached immediately. Collapse, severe weakness or confusion with vomiting requires 911. Do not wait for a routine callback. NIDDK: Treatment for adrenal insufficiency

New or worsening blurred or double vision requires immediate surgical contact for urgent assessment; seek emergency care if the team cannot be reached promptly. Sudden vision loss remains an emergency. UCLA Health: Endonasal pituitary and skullbase surgery discharge instructions CDC: First aid for seizures

Questions for your care team

What is the main goal in my case, and what might remain untreated?
Could observation or medicine reasonably replace surgery?
Which hormone medicines and blood tests will I need after discharge?
Will a graft or nasal flap change my restrictions or follow-up?

Sources and further reading

These sources support the general information on this page. Instructions from other institutions may differ from your own care plan.