Question 1

What are skull base tumors?

Accepted Answer

The skull base is the area between the eyes, behind the nose, reaching down to the brain and spinal cord. It is one of the most complex areas of human anatomy, as multiple nerves along with the main blood vessels of the brain, head and neck pass through it. Skull base tumors are rare and affect fewer than 1 in 100,000 people per year. They are histologically a diverse group of tumors and potentially pose management challenges due to their proximity to the orbit and the intracranial cavity.

Question 2

What causes skull base tumors?

Accepted Answer

Skull base tumors are grouped into benign tumors and malignant tumors. The location of the tumor is very important, as the symptoms will depend on it. Generally, tumors originating in the nose will cause nasal obstruction and nasal bleeding, while tumors originating in the brain or spinal cord will produce neurological symptoms.

Question 3

Which tumors are considered benign skull base tumors?

Accepted Answer

Inverted papilloma. Nasopharyngeal angiofibroma. Pituitary adenoma. Meningioma. Chordoma. Neuroma (trigeminal neuroma, vagal schwannoma). Acoustic neuroma (also called vestibular schwannoma). Glomus tumors (also called paraganglioma, glomus tympanicum, glomus jugulare, carotid body tumor)

Question 4

Which tumors are considered malignant?

Accepted Answer

Carcinomas (squamous cell, basal cell, adenoid cystic, adenocarcinoma). Esthesioneuroblastoma. Mucosal melanoma. Sarcomas (chondrosarcoma, rhabdomyosarcoma, osteosarcoma). Carcinoid (neuroendocrine carcinoma)

Question 5

What are the most common symptoms?

Accepted Answer

Patients with sinonasal tumors often present with symptoms including nasal obstruction, congestion, nasal discharge and nosebleeds. Patients may also experience facial swelling, vision changes or neurological deficits. Some patients are asymptomatic. Patients with tumors originating in the brain or spinal cord typically present with headache, loss of the sense of smell, vision loss or double vision, facial pain or numbness. In rare cases they present with facial weakness, ringing in the ears (tinnitus), dizziness or loss of balance, difficulty breathing, hoarseness (loss of voice), and difficulty swallowing or frequent choking.

Question 6

How is the diagnosis made and what complementary studies are required?

Accepted Answer

The diagnosis of skull base tumors begins with a thorough history and physical examination. Imaging studies always include a CT scan (assesses bony structures) and an MRI (assesses soft tissues and nerves) to stage the tumor locally and to check for the presence of metastases.

Question 7

What is the treatment for a skull base tumor?

Accepted Answer

Surgical therapy is the main treatment for most skull base tumors. Today, endoscopic endonasal surgery has become the standard treatment for these tumors. Radiation can be used alone if the tumor cannot be surgically removed or in patients who cannot tolerate surgery. Combination therapy of surgery and radiotherapy with or without chemotherapy is administered in specific situations.

Question 8

Are all pituitary tumors operated on through the nose?

Accepted Answer

Not all of them. The vast majority of pituitary adenomas can be operated on through an endoscopic endonasal approach in expert hands, avoiding a craniotomy. However, some very large tumors or tumors with specific characteristics may require other surgical strategies.

Question 9

Does endoscopic nasal surgery leave scars?

Accepted Answer

No. The approach is performed through the nasal cavities, with no visible incisions on the face or scalp.

Question 10

How long is the recovery?

Accepted Answer

It depends on each patient and the type of condition, but in many cases the hospital stay is brief and recovery tends to be faster than with traditional approaches.

Question 11

Will I feel pain after surgery?

Accepted Answer

Most patients experience mild to moderate discomfort, more related to nasal congestion than to intense pain.

Question 12

Can I return to work quickly?

Accepted Answer

Many patients resume light activities within a few weeks, although the exact time depends on the type of surgery and individual recovery.

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