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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What causes partial occlusion of the right internal carotid artery?

A routine scan of an elderly man reveals partial occlusion of the
right internal carotid artery, yet blood supply to his cerebrum is
unimpaired. What are two possible causes of the occlusion? What
anastamosis is maintaining blood supply to the brain and by what and
by what (probable) route(s)?
Mon, 13 Jul 2015
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General Surgeon 's  Response
Hi, It seems you are a practitioner. What is important is how much is the stenosis. The only possible causes of stenosis are Atherosclerotic plaque or Fibromuscular dyspalasi which is rare. Or very rarely thrombus from the Arch of Aorta. The anastomosis that is supplying blood to the brain is through the opposite Carotid artery and both Vertebral arteries through the Basilar artery and Circle of Willis.
Dr Rishi, New Delhi, India.
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