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Thanks guys,
it's pretty hard to know what information is right and what's wrong when you're looking through the internet.
I think I just got a bit worried really.
alan-r I don't think having mine removed would do anything since they usually grow until they are moderatley sized, then shrink, then completely disappear and resurface on another part of my back!
I think I'll just go back and ask for a better explanation of what they are and ask for a bit more info about them.
Thanks again!