ANA Discussion Forum
General Category => Inquiries => Topic started by: aj44 on October 20, 2009, 03:36:48 pm
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Hi. What is the ratio (per a thousand or a million) for people getting AN's? Is it common?
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The most common number I've seen is 3,000 annually in the U.S and 1 in 100,000 people, worldwide.
Jim
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They are saying at the symposium of 2 in 100,000. Seems like more as we come across others with them over time and here.
Cheryl R
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Agree with Jim's figure of 1 per 100,000 but that figure will be revised upward in the coming years as more and more are detected. MRI's have only been around for about 15-20 years (roughly) so AN's would bot have been diagnosed as often.
The Stat is far too high coz its a shocking thing to have (personal vent)
Laz
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It is worth emphasizing that like the 3,000 a year in the US that Jim mentioned, the 1 in 100,000 figure is an annual rate. Over a 10 year period, that means 1 in 10,000 end up with one. Over a 50 year period, 1 out of 2000 people will get one diagnosed. So even if you live in a small town, there are likely to be a few over the years.
Steve
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I don't know what they said at the symposium - spent a lot of my time talking with Lori and Kaybo - and not in sessions ::) but I've always heard the 1 in 100,000 static that others have mentioned.
Jan
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I have also read 1/100,000 and like Steve said over the years there can be more people in your small town. Where my parents live in a town of 20,000 they know of 3 people with AN`s so I'm the 4th from a small town that we know of. Of course there could be more.
Dan in Germany
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I don't know what they said at the symposium - spent a lot of my time talking with Lori and Kaybo
yeah, I know! ;) :-*
I have heard that AN's make up 6% of all brain tumors (benign and malignant). Not sure if any of the numbers have changed over time, with advances in technology to diagnose them or folks going to their dr's for symptoms related to AN's vs. "oh, I'll be fine, it's just age playing games with my hearing".
Phyl
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Cheers for all the replies! :)
I have heard myself that they range from 1 in every 3,500 people to 5 in one million people.
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I also heard 3000 a year, 1 in 100,000 but I think that these figures are specifically for the US. I never found a global statistic. I too think the numbers are increasing. When I had my surgery recently at House, I spoke with one of the dr. there about this and he said there was an increase that is being tracked. I agree that it could be better detection due to MRIs but I also think there is an environmental factor too. I read a pubished study from Australia and Sweden attributing it to cell phones. Nothing like that has been published in US that I could find. It would be interesting to see if there are "pockets" of AN in particular states or if it is spread out. Seems to me like a lot of people are getting them in CA and NY but maybe that is just that we have larger populations. When I started this journey, I couldn't believe how many people knew someone who had one (for such a rare tumor)
Cheryl
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*hijack*
I said from the get go that I was going to meet my "fictitious friends" from on here...
K ::)
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It was a House dr who mentioned the 2 in 100,000 at the symposium and actually said probably so at the one 2 yrs ago. Just puzzles me why ENTs seem to have little knowledge of them!
Cheryl R
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I`ve heard that 1 in 100,000 is the ratio. I believe that this number is the number that is detected worldwide . According to some studies if you were to take a brain autopsy of everybody who dies, that number of something detected would be closer to 1 in 100? One of the european journels I was looking thru. Mickey
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I agree with Cheryl (another NY postie) that I think the number of AN diagnoses is rising significantly because of environmental/style of living factors. I, for one, feel very strongly that my AN was a delayed result of exposure to radium treatments following a tonsillectomy/adenoidectomy when I was a teenager. Also, I agree that MRIs are being done so much more frequently today that ANs are being discovered much sooner (smaller) than before, which will skew the statistics for awhile.
Clarice
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Just puzzles me why ENTs seem to have little knowledge of them!
I'm puzzled by this also, Cheryl. I still remember the phone call from my ENT telling me he had the results of my MRI and that I had "something" in my IAC. To this day I'm not entirely sure he knew what that "something" was - but I'm forever grateful that he knew enough to refer me to an outstanding neurotologist.
Jan
Note to Phyl - one of the many wonderful things about the symposium was actually meeting my "sisters" - one who is also my partner in crime ;D Hopefully in Cincinnati I'll have more time to attend sessions - but I wouldn't miss the socializing for anything in the world. I can count the number of people I knew with an AN on no hands prior to joining the forum - and IMO - one of the many great things here is being able to interact with others who've shared my same experience.
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My ENT also said 1 per 100,000........another number I've seen is 5% of people that have one AN are bilatteral..........don't ask me how I know...LOL
John
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Note to Phyl - one of the many wonderful things about the symposium was actually meeting my "sisters" - one who is also my partner in crime ;D Hopefully in Cincinnati I'll have more time to attend sessions - but I wouldn't miss the socializing for anything in the world. I can count the number of people I knew with an AN on no hands prior to joining the forum - and IMO - one of the many great things here is being able to interact with others who've shared my same experience.
In total agreement for myself as well :) :-*
I wonder if the ANA has an official update on the numbers/%. Will inquire to see what I can find out.
Phyl
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Official from the ANA:
"Following is what we have in our patient information booklet:
HOW OFTEN DO ACOUSTIC NEUROMAS OCCUR?
Most recent publications suggest that the incidence of acoustic neuromas is rising.
This is because of advances in MRI scanning both on incidental scans and for
patients experiencing symptoms. Studies in Denmark published in 2004 show the
incidence is 17.4 per million or close to 2 persons per 100,000. Most acoustic
neuromas are diagnosed in patients between the ages of 30 and 60.
This equates to about 2,500-3,000 annually in the US .
At our Medical Advisory Board meeting this past August – following is the report on incidence—
AN Incidence Rate
It was noted that there was a very slight increase of this tumor on the auditory nerve—but no definitive findings; with a slight decrease of other brain tumors."