uhhh... actually we do. NYT covered it in detail, complete with diagrams to show approximate location in skull.
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Clinton Out of Hospital After Treatment for Clot
December 15 2012
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It was an incidence which required hospitalzation, and therefore public knowledge difficult to bury though the media was torn between eliciting sympathy and her courage in fighting through.
Oh yeah, old news.
I thought she was talking about the current episode, sorry if not clear.