Does anyone know anything about "Cholesteatoma"?

I'm sorry if that is spelled wrong, I'm a bad speller for being 13 years old. When I was about 4 or 5, my little brother had a major ear surgery in his left ear. He was only 3 years old, which is sad. My mom always said, "He has to get his ear cut open because there is something eating his brain" to me to dumb it down. Today I asked for the real name of it because I was curious again. She said it was Cholesteatoma. I have been searching it on the internet. I was wondering if anyone else knew anything about it. He is also 10 years old now and 20% death in his left ear. He had the surgery 2. once in 2003 and once again in 2004. Also bone reconstruction surgery in his middle ear part if that helps with info. That's basically all I know about the surgery thingy he has had besides the fact he got gift baskets and stuff and had bandages around his head(obvious). So anyone know anything about Cholesteatoma? Anything at all would be helpful. Thanks in advanced.
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http://www.earsite.com/tumors/cholesteatoma.html ?Try this site, hun.
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