Spike,
Last March an 8mm brain aneurysm was found incidentally on a CT scan, thanks to all the testing done in an attempt to determine what was wrong with me-it was only in May I learned my misery was CRPS.
Of course, the aneurysm is an area that has the highest probability of rupture. The cerebral angiogram I had recently, shows it as being slightly smaller at 7.3 mm, but it is still too big to watch and hope, so I am having a procedure which inserts a stent at the aneurysm's base (mine has a wide opening) and then a catheter fills the aneurysm with tiny coils to hopefully obliterate it. I am lucky the neurosurgeon is at the number two neurosurgery hospital in the US and he has a high rate of success on the first attempt. I will be in the ICU overnight and can return home the next day if all goes well.
Time to re-inflate the aerobed and prepare to spend some more time convalescing on the first floor.