It depends on how well or unwell the patient is from a background medical condition point of view. From the aneurysms point of view, a rough calculation of how likely the aneurysms are to cause a haemorrhage in the brain comes to about 2.5% to 5.5% over 5 years. The risk of an endovascular treatment for these is likely to have a 0.5 to 1.5% risk of complications including bleeding during the procedure, stroke etc. So, it depends on how the patient and you, his loved ones, look at the balance. If you are local to my unit, we would be happy to offer counselling and appropriate treatment.
Next Steps
consider approaching a trusted Neurosurgeon local to them for assessment and advice