Acoustic neuroma Tumor

Acoustic neuroma ( also called acoustic neurinoma , schwannoma vestibular and acoustic neurilemoma ) is a noncancerous tumor that Slowly Grow inside the head . There are 12 cranial nervo that emerge from the brain . O EIGHTH cranial nervo ( called the vestibulocochlear or acoustic nervo ) runs into the Inner ear and is responsible for Hearing and Equilibrium . Acoustic neuroma occurs from an overproduction of the Cell ( Schwann cells ) that cover the acoustic nervo . Significances

According to the American Hearing Research Foundation ( AHRF ) , only 2,000 para 3,000 people are diagnosed with acoustic neuroma each year in the United States . Acoustic neuroma accounts for 6 percent of intracraniana brain tumor . According to the National Institutes of Health , only 1 em 1,000 people with asymmetrical Hearing Loss Suffer from acoustic neuroma . Serviço Postal dos Symptoms

Acoustic neuroma causas Signs and Symptoms when it becomes large enough to push down on the acoustic nervo . The most common Symptoms mais Hearing Loss . Hearing Loss usually occurs gradually , but it may be Sudden in some cases . It typically occurs in one ear , but may affecto both Ears . Outros Symptoms include : Vertigo , tinnitus ( ringing of Ears ) , Difficulty Keeping balanço and numbness of the face. If a tumor becomes too large , it cão put pressure on the brainstem and cão be potentially fatal . Serviço Postal dos EUA causa

The acoustic nervo mais Divided into three Branches : cochlear , superior vestibular and inferior vestibular . Acoustic neuroma typically occurs on one of the vestibular Branch. The exact cause of acoustic neuroma is not known . In rare cases , a hereditary disorder ( called Neurofibromatose 2) cão cause the Formation of tumor on the acoustic nervo in both Ears . According to Mayo Clinic , some studies suggest that Persistent cell phone use and exposure to loud noise may cause acoustic neuroma , but these studies do not provid conclusivo Evidence . Serviço Postal dos Diagnosis

Typically , the Signs and Symptoms of acoustic neuroma Não appear in the initial estágios , sob it cão be hard to get a Timely diagnóstico . Os testes used to diagnose acoustic neuroma include : audiometry ( conventional Hearing teste ) , electronystagmography ( ENG ) , brainstem auditory evoked response ( Baer ) , Magnetic Resonance Imaging (MRI) and computerized tomography (CT) .

Treatment

There is no drug that cão slow or stop the growth of the acoustic neuroma tumor . Treatment of acoustic neuroma involve constant monitoring of the growth of the tumor and use of Hearing aids . Surgical removal of the tumor is the best option for people with significantly sized tumor . Some complications associated with Surgery include : Persistent headaches , partial or total Hearing loss , and dizziness . In quase the tumor mais inoperable , stereotactic radiosurgery is used to Prevent the tumor from growing . Serviço Postal dos EUA em