Non-occlusive intraluminal internal carotid artery thrombus

Case contributed by Dr Chris O'Donnell


Bilateral episodic amaurosis fugax (painless transient monocular visual loss)

Patient Data

Age: 65
Gender: Male

CT brain is normal so CT angiography performed


Highly unusual intra-luminal filling defect (arrow) in the central right internal carotid artery distal to a high grade stenosis indicative of clot (it is too well-defined to represent "turbulent flow"). Small pieces are presumably breaking off to cause amaurosis. On the left there is a a large ulcerated plaque (without significant luminal narrowing) (arrow) presumably associated with thrombus in its base intermittently breaking off and reaching the retinal artery

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.