July 17, 2013
Acoustic Neuromas, also known as vestibular schwannoma, is a slow growing benign tumor on the balance nerve connecting the inner ear to the brain.
This is an uncommon condition, found in roughly 1 in 100,000 people. The most common symptoms include hearing loss, tinnitus (ringing in your ear), and vertigo (a feeling of imbalance). Because these symptoms are present with many conditions, it is important to see your doctor if they persist more than a few weeks. Your healthcare provider will make a referral to an ENT surgeon or to a Neurotologist if they feel you need further evaluation. Neurotology is a sub-specialty of otolaryngology (ears, nose, and throat) specializing in the neurological conditions of the ears and brainstem (also referred to as skull base surgery. if an acoustic neuroma is suspected). The neurotologist may conduct a clinical evaluation, hearing and balance tests and imaging studies, such as MRI, to make the diagnosis.
Once diagnosed, there are...
April 29, 2011
Leave it to the Brits to address such a common question with scientific rigor and analysis! Philip Michael, Niel Opie and Michael Smith, from Worcestershire Royal Hospital in the UK, published a short but information-packed article in the August edition of the journal Otolaryngology-Head and Neck Surgery (2010;143:219-22). They looked at seven different types of convertible cars (Audi A4, Porsche 911, Aston Martin V8 Vantage, Morgan Roadster, Bentley Continental GT, Toyota MR2, and a Mazda MX5) driving at 50, 60 and 70 mph with windows raised and down. They placed a noise sensor on the traffic side of the car (on the right in the UK- they drive on the wrong side of the road) and took 3 separate measurements in each condition (scientific method at work). All tests were done on similar roadways and in non-rush hour traffic to minimize data contamination.
What did they find?
August 25, 2010
Bilateral 8th cranial nerve tumors, also known as vestibular schwannomas or acoustic neuromas (see figure), are pathognomonic of a fascinating syndrome called central neurofibromatosis or neurofibromatosis type 2 (NF-2). NF-2 is a rare, autosomal-dominant disease with an incidence of 1 in 30,000 live births. The mechanism by which the genetic changes underlying NF-2 produce these tumors of a cranial nerve remains a mystery. Interestingly, two other associations are also sufficient to make a diagnosis of NF-2. These are unilateral VS at early age (< 30 years) plus two other specific lesions (meningioma, schwannoma other than VS, glioma or pre-senile cataract), and unilateral VS at early age with an affected first-degree parent, sibling or child. Patients with NF-2 usually present between the ages of 18 and 24 years with tinnitus, hearing loss and balance difficulties. Symptoms of unilateral tinnitus, asymmetric hearing loss or unresolving vertigo or imbalance warrant a gadolinium-enhanced MRI ...