Acoustic schwannomas

Acoustic Schwannomas also known as Vestibular Schwannomas are benign, usually slow-growing tumors that develop from the Schwann cells lining the vestibulocochlear nerve (eighth cranial nerve). This nerve transmits sound and balance information from the inner ear to the brain.

Etiology

The exact cause of acoustic schwannomas is unknown. However, a genetic disorder known as Neurofibromatosis type II (NF2) is associated with the development of these tumors. NF2 is characterized by the growth of noncancerous tumors in the nervous system.

Symptoms

The symptoms of acoustic schwannomas can vary greatly depending on the size and location of the tumor. Common symptoms include hearing loss, tinnitus (ringing in the ear), and vertigo (dizziness). Other symptoms may include difficulty understanding speech, balance problems, and facial numbness or weakness.

Diagnosis

Diagnosis of acoustic schwannomas typically involves a physical examination, hearing tests, and imaging tests such as magnetic resonance imaging (MRI) or computed tomography (CT) scans.

Treatment

Treatment options for acoustic schwannomas include observation, surgery, and radiation therapy. The choice of treatment depends on various factors such as the size and growth rate of the tumor, the patient's age and overall health, and the severity of the symptoms.

Prognosis

The prognosis for individuals with acoustic schwannomas is generally good. Most tumors grow slowly or not at all, and many people live with them for many years without experiencing significant symptoms. However, if left untreated, these tumors can cause serious complications such as permanent hearing loss and life-threatening brainstem compression.

See Also

• Neurofibromatosis
• Schwannoma
• Vestibulocochlear nerve