I looked it up at www.wikipedia.org, you can type it in there, and see what you make of it. I think this is the best way for you to see it. Hope this helps you out.
If you go to your OBG-YN they have ban flits of what it looks like. I'm twenty and I have had it for about two years the only cure is to have a hysterectomy *pardon my spelling* but it kinda looks like spider webs are between the ovaries and cervix and lichens appear as well as tumors. Trust me you don't want to see it! It just looks painful as it really is!