Aneurysm versus opacified branch vessel

[fromnc]

Hello.  I go to my neurologist Monday, wanted a little back-up info if possible.  Have my MRI results that show a 1 mm vascular protrusion from the A2 segment of the right ACA.  They suggest a CTA to determine whether this is an aneurysm or partially opacified branch vessel.  I know what an aneurysm is (bad), what is a paritally opacified branch vessel?  Is this just an imaging flaw?  Also, if it is an aneurysm - is something of this size likely to end up never causing any problems?  I am a 40 year old non-smoker of healthy weight who never delved into any illegal drugs.  I smoked, but stopped 6 years ago.  Thank you!

[fromnc]

Thank you for your response!

[Dr. Kokil Mathur]

Hi!
I can understand your worry. Blood vessels appear as opacifications and this is better visualized in CTA. So if it is a small blood vessel branch on CTA then it is a normal finding. An aneurysm of 1mm size is unlikely to cause any complications. Although, just knowing that you have an aneurysm can be a cause of worry for you! Please discuss with your doctor. Take care!

The medical advice given should not be considered a substitute for medical care provided by a doctor who can examine you. The advice may not be completely correct for you as the doctor cannot examine you and does not know your complete medical history. Hence this reply to your post should only be considered as a guiding line and you must consult your doctor at the earliest for your medical problem.