Retroperitoneum -- that's the word I was thinking of!LOL. OK, it's the tiger country at the back of the abdominal cavity- somewhere you only ever want to go on purpose. ;-)
/edit/
As I said, of course I feel very sorry for anybody who thinks they're going under for a simple procedure and wakes to find their life changed forever or (worse) doesn't wake. In this case I see that there are 3 investigations underway so we need only wait to find out whether there is blame or improvement to be sought and if so, where.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1