Lisa,
This link will provide a medical explanation for your question.
http://www.nlm.nih.gov/medlineplus/ency/article/001414.htm
I had one that bled, and I know of two Aunts that died from bleeding strokes. They died before anyone really knew of these things. I advised my two sisters to have themselves screened for any problems.
wife had a annie that ruptured in nov 09 and survived, her mothers twin brothers daughter(cousin) had an annie 2 yrs ago and died.
Hi and welcome to this forum.
Wow, a leaking aneurysm. So glad they found it before rupture. What sypmtoms were you having that lead up to being seen by a doctor?
Aneurysms can be hereditary. I think they are still doing research into this but it has been known to run in families. I believe its "usually" if 2 or more first degree relatives have had them then it can be said there may be a familial link.
As far as the multiple annies go. I'm no doctor but many people I've seen on different sites plenty of us have more than 1 annie. I have 1 annie and 2 tiny ones. Found the first one a year ago and the other two this year.
Hopefully, more people will come along and answer as well. Wishing you well and hopefully, we'll see you on here more. Having people on here who have had surgery to support others will help this particular forum grow ;-) So glad you found us.