Endoscopic Skull Base Tumor Surgery

Which tumors may be considered?

The skull base separates the brain from parts of the face and neck. It contains passages for major blood vessels and nerves. Selected meningiomas, craniopharyngiomas, chordomas and other tumors may be reached endonasally. These are different diseases with different long-term treatment needs. A location label alone does not tell you whether a tumor is cancer or how it will behave. Johns Hopkins Medicine: Skull base surgery

The team studies MRI and sometimes CT or blood-vessel imaging. Vision, hormone function, swallowing or other nerve functions may need baseline testing. Ask the surgeon to point out the tumor, nearby structures and proposed route on your scan.

Why operate, and what else is possible?

Surgery may establish the diagnosis, relieve pressure, protect function or remove a growing tumor. Observation with scheduled imaging can be reasonable for some small tumors without significant symptoms. Radiation, an open craniotomy, a combined approach or a limited biopsy may offer a better balance of benefit and risk. Johns Hopkins Medicine: Skull base tumors

For example, skull base chordoma often requires surgery and radiation, while management of a meningioma may differ. The treatment plan should follow the tumor’s biology, not the appeal of a small external incision. Ask what is likely to happen without treatment, whether there is time for a second opinion and what symptoms would make treatment more urgent. Johns Hopkins Medicine: Skull base chordoma

How the operation is performed

You receive general anesthesia. A camera and instruments pass through the nostrils and sinuses. Surgeons remove the necessary bone to reach the tumor and use imaging guidance when appropriate. The team may include neurosurgery and ear, nose and throat specialists. Although there may be no visible facial incision, the internal operation can be extensive. Johns Hopkins Medicine: Endoscopic endonasal surgery

After removing the planned amount of tumor, the team reconstructs the barrier between the nasal passages and the brain. A flap of nasal lining, tissue grafts and other materials may be used. Some grafts are taken through an abdominal or thigh incision. A temporary drain for brain fluid may be needed in selected cases; it is not required for everyone. AANS: Craniopharyngiomas

Realistic goals and limits

The safest result may be a partial removal. Tumor can adhere to a vision nerve, surround an artery or involve tissue that controls essential functions. Leaving a portion for monitoring or radiation may protect your independence. Ask what finding during surgery would lead the team to stop removing tumor or change the approach.

Improvement in vision, pain or other symptoms is not assured, and existing nerve injury may persist. Pathology—the laboratory analysis of removed tissue—may change the next treatment recommendation. Even an apparently complete removal can require long-term scans because recurrence risk depends on the diagnosis.

Risks depend on the structures involved

Risks include leakage of cerebrospinal fluid (CSF), the fluid around the brain and spinal cord; meningitis, an infection around those structures; wound or sinus infection, nasal bleeding and problems with smell or nasal healing. Injury to nerves may affect vision, eye movement, facial sensation or swallowing, depending on the target. Damage to an artery can cause major bleeding or stroke. Anesthesia complications, blood clots and life-threatening complications are also possible. Johns Hopkins Medicine: Skull base surgery

Tumors near the pituitary gland or its connections can affect hormones and water balance. Craniopharyngiomas may involve the hypothalamus, a region important for appetite and other body regulation. This risk is different from a tumor far from the pituitary region. Ask which risks apply to your scan, rather than assuming all endonasal operations have the same risk profile. AANS: Craniopharyngiomas

Preparing for the operation

Make sure the team knows about prior surgery or radiation, nosebleeds, sinus problems, sleep apnea, medicines and supplements. Obtain a written medication and fasting plan. Blood-thinner decisions should be coordinated by your clinicians. Discuss CPAP before admission because pressure delivered through the nose may affect a fresh repair.

Arrange a caregiver, transport and help with daily tasks. Identify which service will provide nasal follow-up, whether hormone testing is needed, and who will coordinate pathology and any further cancer treatment. Write down your current symptoms so changes can be described accurately after surgery.

Recovery and warning symptoms

Monitoring focuses on neurological function, the repair and the particular nerves or hormone systems at risk. Congestion, crusting and fatigue may occur. The team sets instructions for nasal sprays or rinses, packing, lifting and pressure-producing activities. Do not remove packing or start irrigation on your own.

Sudden vision loss, new weakness, difficulty speaking, uncontrolled heavy bleeding or breathing difficulty requires 911 or emergency care. Severe headache with fever, stiff neck or confusion also needs emergency assessment. Clear watery drainage from the nose or persistent salty drainage into the throat needs prompt same-day surgical advice because it can indicate a CSF leak. Contact the discharge/on-call number, and seek urgent assessment if concerning symptoms cannot be addressed promptly.

New or worsening blurred or double vision needs immediate contact with the surgical team for urgent assessment; seek emergency care if they are not promptly reachable. Call 911 for a first seizure, a seizure lasting five minutes or longer, or repeated seizures without recovery. UCLA Health: Endonasal pituitary and skullbase surgery discharge instructions CDC: First aid for seizures