Carotid Webs and Recurrent XXXX in the Era of CT Angiography.

@entity1 @entity64 @entity4267 @entity385
BACKGROUND AND PURPOSE: Carotid webs may cause recurrent @entity385 . We describe the prevalence, demographics, clinical presentation, imaging features, histopathology, and @entity64 risk associated with this under-recognized lesion. MATERIALS AND METHODS: A carotid web was defined on CTA as a thin intraluminal filling defect along the posterior wall of the carotid bulb just beyond the carotid bifurcation on oblique sagittal section CTA that was seen as a septum on axial CTA. Using a prospective case series from April 2013 to April 2014, we describe the demographics, spectrum of imaging features on CTA, and histopathology of these carotid webs. From a retrospective analysis of @entity1 at our center from May 2012 to April 2013 who had a baseline head and neck CTA followed by a brain MR imaging within 1-2 days of the CTA, we determine the period prevalence of carotid webs and the prevalence of @entity64 on imaging. RESULTS: In the prospective series, the mean age was 50 years (range, 41-55 years); 5/7 @entity1 were @entity1 . Recurrent @entity64 was seen in 5/7 (71.4%) @entity1 with the carotid web; time to recurrence ranged from 1 to 97 months. Histopathology suggested a high probability of @entity4267 . In the retrospective series, carotid webs were seen in 7/576 @entity1 for a hospital-based-period prevalence of 1.2% (95% CI, 0.4%-2.5%). Two of these 7 @entity1 had @entity64 in the vascular territory of the carotid web. CONCLUSIONS: A carotid web may contribute to recurrent @entity385 in @entity1 with no other determined @entity64 mechanism. Intimal variant @entity4267 is the pathologic diagnosis in most cases. The prevalence of carotid web is low, while the optimal management strategy remains unknown.
